The 82nd Annual Meeting of the Meteoritical Society

and

Workshop on Minerals, Organics, and Water in 3D View

July 7–12, 2019

Sapporo, Hokkaido, Japan

Program and Abstracts

Workshop on Minerals, Organics, and Water in 3D View Sunday, July 7, 2019
11:00 a.m.	Conference Roon 1	Workshop: Minerals, Organics, and Water in 3D View
12:30 p.m.	Lobby of Conference Hall	Poster Session: Workshop: Minerals, Organics, and Water in 3D View
The 82nd Annual Meeting of the Meteoritical Society Monday, July 8, 2019
9:00 a.m.	Auditorium	Opening Ceremony
10:45 a.m.	Auditorium	Special Session: Ryugu, Bennu, and Small Bodies I
10:45 a.m.	Small Auditorium	Impact Processes from Earth to the Solar System
10:45 a.m.	Conference Room 1	Dynamical Evolution and Processes in the Solar Nebula
2:30 p.m.	Auditorium	Special Session: Ryugu, Bennu, and Small Bodies II
2:30 p.m.	Small Auditorium	Impacts on Earth: Infall to Craters
2:30 p.m.	Conference Room 1	Differentiated Meteorites I: Mostly HEDs
7:00 p.m.	Auditorium	Barringer Lecture
Tuesday, July 9, 2019
9:00 a.m.	Auditorium	Views of Mars from Meteorites, Analogs and Remote-Sensing
9:00 a.m.	Small Auditorium	Chondrules and Chondrites I
9:00 a.m.	Conference Room 1	Presolar Grains and the Origins of Isotopic Anomalies in Meteoritic Materials
2:30 p.m.	Auditorium	Chondrules and Chondrites II
2:30 p.m.	Small Auditorium	Meteorite Exposure Histories, Delivery, and Recovery
2:30 p.m.	Conference Room 1	Differentiated Meteorites II: From Primitive Achondrites to Irons
5:30 p.m.	Lobby of Conference Hall	Poster Session: Chondrules!
5:30 p.m.	Lobby of Conference Hall	Poster Session: Differentiated Meteorites I: Mostly HEDs
5:30 p.m.	Lobby of Conference Hall	Poster Session: Differentiated Meteorites II: From Primitive Achondrites to Irons
5:30 p.m.	Lobby of Conference Hall	Poster Session: Dynamical Evolution and Processes in the Solar Nebula
5:30 p.m.	Lobby of Conference Hall	Poster Session: Impacts Here, There, and Everywhere
5:30 p.m.	Lobby of Conference Hall	Poster Session: Meteorite Exposure Histories, Delivery, and Recovery
5:30 p.m.	Lobby of Conference Hall	Poster Session: Presolar Grains and the Origins of Isotopic Anomalies in Meteoritic Materials
5:30 p.m.	Lobby of Conference Hall	Poster Session: Special Session: Ryugu, Bennu, and Small Bodies
5:30 p.m.	Lobby of Conference Hall	Poster Session: Views of Mars from Meteorites, Analogs and Remote-Sensing
Wednesday, July 10, 2019
9:00 a.m.	Auditorium	Award Ceremony
Thursday, July 11, 2019
9:00 a.m.	Auditorium	Special Session: Analysis of Lunar Samples: A Celebration of 50 Years Since Apollo 11
9:00 a.m.	Small Auditorium	Carbonaceous Chondrites I: Components, Post-Accretion Histories, and Classification
9:00 a.m.	Conference Room 1	Refractory Inclusions
2:30 p.m.	Auditorium	Special Session: 50 Years of Japanese Antarctic Meteorites, Allende and Murchison
2:30 p.m.	Small Auditorium	Organic Matter in Meteorites
2:30 p.m.	Conference Room 1	Surface Processes on Airless Bodies
5:30 p.m.	Lobby of Conference Hall	Poster Session: Chondrites!
5:30 p.m.	Lobby of Conference Hall	Poster Session: Carbonaceous Chondrites: Components, Post-Accretion Histories, and Classification
5:30 p.m.	Lobby of Conference Hall	Poster Session: Microanalysis of Extraterrestrial Samples and Developments in Advanced Techniques
5:30 p.m.	Lobby of Conference Hall	Poster Session: Non-Carbonaceous Chondrites: Components, Post-Accretion Histories, and Classification
5:30 p.m.	Lobby of Conference Hall	Poster Session: Organic Matter in Meteorites
5:30 p.m.	Lobby of Conference Hall	Poster Session: Refractory Inclusions
5:30 p.m.	Lobby of Conference Hall	Poster Session: Surface Processes on Airless Bodies
5:30 p.m.	Lobby of Conference Hall	Poster Session: 1969: The Year of Japanese Antarctic Meteorites, Apollo 11, Murchison, and Allende
Friday, July 12, 2019
9:00 a.m.	Auditorium	Microanalysis of Extraterrestrial Samples and Developments in Advanced Techniques
9:00 a.m.	Small Auditorium	Carbonaceous Chondrites II: Components, Post-Accretion Histories, and Classification
9:00 a.m.	Conference Room 1	Non-Carbonaceous Chondrites: Components, Post-Accretion Histories, and Classification
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WORKSHOP: MINERALS, ORGANICS, AND WATER IN 3D VIEW

Sunday, July 7, 2019

9:00 a.m. Conference Room 1

Chairs: Luke Daly and Rosario Brunetto

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
11:00 a.m.		Welcome Address
11:05 a.m.	Ebel D. S. * Friedrich J. M.	Laboratory CT: A Revolution in Planetary Sample Petrology [#6118] Since 2000 non-synchrotron CT or “lab CT” has transformed geosciences. New findings about meteorites are enabled and will grow. AMNH and others offer experience. Vendors proliferate as software smartens up. Challenges loom but the future is bright!
11:35 a.m.	Hanna R. D. * Ketcham R. A. Zolensky M. Bale H. Sun J.	3D Crystallographic Orientation of Olivine in Bjurböle Chondrules [#6426] We use X-ray diffraction contrast tomography (DCT) to determine the 3D crystallographic orientation of olivine within two Bjurböle chondrules.
11:50 a.m.	Uesugi M. *	Integrated Synchrotron Radiation Computed Tomography System for the Analysis of Extraterrestrial Materials [#6280] We developed an integrated CT system for the analysis of extraterrestrial material. The system includes several setup with different spatial resolution, and combining with x-ray diffraction and phase contrast tomography.
12:20 p.m.		Poster Flash Talks
12:30 p.m.		LUNCH
1:45 p.m.	Tsuchiyama A. * Miyake A. Uesugi K. Takeuchi A. Nakano T. Matsuno J.	Syncrotron Radiation-Based Nano-Tomography for Extraterrestrial Materials [#6243] SR-based nano-tomography and its application to extraterrestrial materials particularly returned samples are reviewed.
2:15 p.m.	Yasutake M. * Vacarro E. Uesugi K. Takeuchi A. Nakano T. Takigawa A. Tsuchiyama A.	3D Observation of Porous Matrices in Primitive CM-CO Chondrites Based on SR-Nano-XCT Imaging [#6091] We conducted SR-nano-XCT to investigate the 3D structure of matrices of primitive CM-CO carbonaceous chondrites. It reveals the presence of whisker-like material, wide-spreading pores, and unique spherical components in the matrices.
2:30 p.m.	Friedrich J. M. * Sears D. W. G. Glavin D. P. Ebel D. S. Rivers M. L. McLain H. L. Sehlke A. Dworkin J. P. Sears H.	The Effect of X-Ray Microtomography Imaging on Amino Acids and Thermoluminescence in Chondrites [#6307] We describe a series of experiments that conclude μCT imaging causes minimal changes in the soluble organic compound (amino acid) content of a carbonaceous chondrite. We find that μCT changes the natural radiation record of a chondrite.
2:45 p.m.	Brunetto R. * Dionnet Z. Aléon-Toppani A. Baklouti D. Borondics F. Djouadi Z. King A. Nakamura T. Rubino S. Sandt C. Troadec D. Tsuchiyama A.	FTIR Micro-Tomography Coupled to X-CT on Extraterrestrial Materials [#6037] FTIR micro-tomography of extra-terrestrial materials allows the detection of mineral phases, water and organics, and their spatial co-localization in 3D. It is an efficient first-step in a multi-technique analytical sequence on returned samples.
3:15 p.m.		Coffee Break
3:30 p.m.	Jinnai H. *	Recent Developments in Electron Tomography and FIB/SEM Serial Sectioning for 3D Morphological Analysis in Polymer Composites [#6246] We discuss recent developments of 3D imaging techniques, such as electron tomography and FIB/SEM serial sectioning, and their applications to polymer composites.
4:15 p.m.	Daly L. *	Atom Probe Tomography in Planetary Science [#6286] An overview of atom probe tomography and its current applications in planetary science.
4:45 p.m.		Closing Remarks

Sunday, July 7, 2019

POSTER SESSION: WORKSHOP: MINERALS, ORGANICS, AND WATER IN 3D VIEW

12:30 p.m. Lobby of Conference Hall

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Authors (*Denotes Presenter)	Abstract Title and Summary
Zeigler R. A. Wilbur Z. E.	Using X-Ray Computed Tomography as a Tool for Preliminary Examination Tool of Current and Future Extraterrestrial Sample Return Missions [#6264] As part of the curation process, we have begun to scan Apollo and Antarctic Meteorite samples in order to find “new” subsamples that can be made available to the wider scientific community for study.
Master S. Bam L. Karfunkel J.	X-Ray Microtomography Shows Ellipsoidal Inclusion-Free Halo Around Cubic Phase in Brazilian Carbonado: First Strain Analysis of Pre-Solar Material? [#6110] We have studied with microfocus XRT a Brazilian carbonado with large (1 mm3) cubic grains surrounded by an inclusion-free halo. In probably the first strain analysis of pre-Solar material, we determine the strain to be oblate, with ~26% shortening.

THE 82ND ANNUAL MEETING OF THE METEORITICAL SOCIETY

Monday, July 8, 2019

OPENING CEREMONY

9:00 a.m. Auditorium

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
9:00 a.m.		Opening Ceremony
9:30 a.m.	Prof. Kazuhisa Goto (University of Tokyo)	[INVITED] Tsunami Geology and Geomorphology: Extreme Events in the Earth’s and Human Histories
10:30 a.m.		BREAK

Monday, July 8, 2019

SPECIAL SESSION: RYUGU, BENNU, AND SMALL BODIES I

10:45 a.m. Auditorium

Chairs: Harold Connolly Jr. and Seiji Sugita

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
10:45 a.m.	Nakamura T. * Watanabe S. Hirabayashi M. Hirata N. Hirata N. Noguchi R. Shimaki Y. Ikeda H. Tatsumi E. Yoshikawa M. Kikuchi S. Yabuta H. Tachibana S. Ishihara Y. Morota T. Kitazato K. Sakatani N. Matsumoto K. Wada K. Senshu H. Honda C. Michikami T. Takeuchi H. Kouyama T. Honda R. Kameda S. Fuse T. Miyamoto H. Komatsu G. Sugita S. Okada T. Namiki N. Arakawa M. Ishiguro M. Abe M. Gaskell R. Palmer E. Barnouin O. S. Michel P. French A. S. McMahon J. W. Scheeres D. J. Abell P. A. Yamamoto Y. Tanaka S. Shirai K. Matsuoka M. Yamada M. Yokota Y. Suzuki H. Yoshioka K. Cho Y. Tanaka S. Nishikawa N. Sugiyama T. Kikuchi H. Hemmi R. Yamaguchi T. Ogawa N. Ono G. Mimasu Y. Yoshikawa K. Takahashi T. Takei Y. Fujii A. Hirose C. Iwata T. Hayakawa M. Hosoda S. Mori O. Sawada H. Shimada T. Soldini S. Yano H. Tsukizaki R. Ozaki M. Iijima Y. Ogawa K. Fujimoto M. Ho T.-M. Moussi A. Jaumann R. Bibring J.-P. Krause C. Terui F. Saiki T. Nakazawa S. Tsuda Y.	Hayabusa2: Current Summary [#6306] Hayabusa2 is the 2nd Japanese sample return mission from C-type asteroid 162173 Ryugu. Recently we succeeded the first touch down onto a site on the equatorial ridge. Achievement so far will be introduced in the presentation.
11:00 a.m.	Sugita S. * Honda R. Morota T. Kameda S. Sawada H. Tatsumi E. Honda C. Yokota Y. Yamada M. Kouyama T. Sakatani N. Suzuki H. Yoshioka K. Hayakawa M. Cho Y. Matsuoka M. Hirata N. Hirata N. Domingue D. Miyamoto H. Kikuchi H. Hemmi R. Michikami T. Barnouin O. S. Ernst C. M. Palmer E. Gaskell R. Michel P. Hirabayashi M. Jaumann R. Otto K. Schmitz N. Schroeder S. E. Hiroi T. Nakamura T. Komatsu G. Yoshikawa M. Tanaka S. Shirai K. Watanabe S. Tsuda Y.	Ryugu’s Parent-Body Processes Estimated from Hayabusa2 Multi-Band Optical Observations [#6366] Hayabusa2 observations revealed that that boulders on asteroid Ryugu have spectra very similar to each other, suggesting an uniform interior of its parent body. This is consistent with radiogenic heating than impact-induced heating.
11:15 a.m.	Hamilton V. E. * Simon A. A. Christensen P. R. Reuter D. C. Emery J. P. Kaplan H. H. Clark B. E. Lauretta D. S. OSIRIS-REx Team	Spectral Characterization of (101955) Bennu from OSIRIS-REx Observations [#6357] The surface of Bennu is dominated volumetrically by hydrated minerals and is spectrally consistent with CI and CM carbonaceous chondrites. Variations in spectral signatures may be related to space weathering, particle size, and/or composition.
11:30 a.m.	Hanna R. D. * Haberle C. W. Hamilton V. E. Lee M. R. King A. J. Lindgren P. Howell E. S. Molaro J. L. Kaplan H. H. Abreu N. Friedrich J. M. Lauretta D. S. the OSIRIS-REx team	Bennu: An Aqueously Altered and Mildly Heated CM Carbonaceous Asteroid [#6443] We explore the spectral evidence for mildly heated, aqueously altered CM material on Bennu.
11:45 a.m.	Takir D. * Kitazato K. Milliken R. E. Iwata T. Abe M. Ohtake M. Matsuura S. Arai T. Nakauchi Y. Nakamura T. Matsuoka M. Senshu H. Hirata N. Hiroi T. Pilorget C. Brunetto R. Poulet F. Riu L. Bibring J.-P. Domingue D. L. Vilas F. Barucci M. A. Perna D. Palomba E. Galiano A. Tsumura K. Osawa T. Komatsu M. Nakato A. Arai T. Takato N. Matsunaga T. Takagi Y. Matsumoto K. Kouyama T. Yokota Y. Tatsumi E. Sakatani N. Yamamoto Y. Okada T. Sugita S. Honda R. Morota T. Kameda S. Sawada H. Honda C. Yamada M. Suzuki H. Yoshioka K. Hayakawa M. Ogawa K. Cho Y. Shirai K. Shimaki Y. Hirata N. Yamaguchi A. Ogawa N. Terui F. Yamaguchi T. Takei Y. Saiki T. Nakazawa S. Tanaka S. Yoshikawa M. Watanabe S. Tsuda Y.	Spectral Characteristics of Asteroid (162173) Ryugu with Hayabusa2 NIRS3 [#6096] We report recent results of the surface composition of asteroid 162173 Ryugu from Hayabusa2 near-infrared spectroscopy.
12:00 p.m.	Okada T. * Fukuhara T. Tanaka S. Taguchi M. Arai T. Sakatani N. Shimaki Y. Senshu H. Demura H. Ogawa Y. Suko K. Sekiguchi T. Kouyama T. Helbert J. Mueller T. G. Hagermann A. Biele J. Grott M. Hamm M. Delbo M.	Thermal Inertia of C-Type Near-Earth Asteroid 162173 Ryugu Determined from the Dawn Side Observations by Thermal Infrared Imager [#6303] Thermal inertia of C-type asteroid Ryugu is determined using the data observed at the dawn side by the thermal infrared imager TIR onboard Hayabusa2, consistent with the value derived from the daytime observations and with the ground observations.
12:15 p.m.	Yabuta H. * Ikehara M. Tatsumi E. Sugita S. Yamashita S. Mogi K. Amano K. Matsuoka M. Kobayashi S. Nakamura T.	Relationship Between Visible Reflectance at 550 nm and Carbon Contents in Carbonaceous Chondrites: Attempt to Estimate the Bulk Carbon Contents of Asteroid Ryugu’s Surface [#6337] In order to estimate bulk carbon contents of asteroid Ryugu’s surface, correlation between reflectance spectra and total carbon contents of primitive-, thermally metamorphosed-, and experimentally heated-carbonaceous chondrites were investigated.
12:30 p.m.	Connolly H. C. Jr. * Jawin E. R. Ballouz R. L. Walsh K. J. McCoy T. J. DellaGiustina D. N. Burke K. Biehaus E. B. Rizk B. d’Aubigny C. Hamilton V. E. Bottke W. F. Dworkin J. P. Delbo M. Tachibana S. Yurimoto H. ORISIS-REx Team	OSIRIS-REx Sample Science and the Geology of Active Asteroid Bennu [#6209] The OSIRIS-REx spacecraft went into orbit about (101955) Bennu on 31 December 2018. Herein we report on the surface geology of Bennu with a goal of contextualizing the nature of the future returned sample.

Monday, July 8, 2019

IMPACT PROCESSES FROM EARTH TO THE SOLAR SYSTEM

10:45 a.m. Small Auditorium

Chairs: Naotaka Tomioka and Thomas Sharp

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
10:45 a.m.	Brasser R. * Werner S. C. Mojzsis S. J.	Dynamical Impact Bombardment Chronology of the Terrestrial Planets from 4.5 Ga to 3.5 Ga [#6052] We combine dynamical and Monte Carlo simulations to study late accretion on the inner planets. The bombardment intensity and decline match the calibrated cratering chronology proposed by Werner et al. (2014). Cosmochemical implications are discussed.
11:00 a.m.	Shikina R. S. * Mikouchi T. M.	Heating Experiments of Maskelynite in Zagami and Elephant Moraine A79001: Implications for Their Relative Shock Degrees [#6367] We performed heating experiments (900 and 1000 °C for 1–168 hours) of maskelynite in Zagami and EETA 79001 and found slightly different volumes of recrystallized plagioclase. This probably reflects higher shock pressure of EETA 79001 than Zagami.
11:15 a.m.	Kurosawa K. * Genda H. Niihara T. Kayama M. Koike M. Mikouchi T. Sano Y. Matsui T.	Enhancement of the Degree of Impact Heating in Pressure-Strengthened Rocks [#6315] We investigated the effects of material strength on the degree of impact-induced heating by using a shock physics code. We found that low-velocity impacts (<10 km/s) leads to a much larger degree of impact heating than previously expected.
11:30 a.m.	Sharp T. G. * Hu J.	Shock Veins in Meteorites: What They Tell Us About Shock Conditions [#6463] The usefulness of shock veins for interpreting shock conditions is debated. Here we calculate shock-temperatures and quench paths to semi-quantitatively evaluate the relationship between shock-melt crystallization and shock pressure.
11:45 a.m.	Tomioka N. * Okuchi T. Miyahara M. Iitaka T. Purevjav N. Tani R. Kodama Y.	Topotaxial Intergrowths of Epsilon-(Mg,Fe)2SiO4 in Wadsleyite and Ringwoodite in Shocked Chondrites [#6007] We report natural occurrence of a new high-pressure polymorph of olivine in shocked chondrites based on transmission electron microscopy and evaluation of its crystal structure and stability by the first principles calculations.
12:00 p.m.	Langenhorst F. * Adelhardt E. Mansfeld U. Liermann H. P.	Dynamic Compression and Phase Transformations of Baddeleyite in Synchroton-based Diamond Anvil Cell Experiments [#6503] We present synchroton XRD results of dynamic DAC experiments on baddeleyite, aiming at simulating the effects of shock compression. The DAC experiments allowed to reproduce known shock-induced transformations to orthorhombic phases.
12:15 p.m.	Pittarello L. * Daly L. Ferrière L. Chung P. Pickersgill A. E. Lee M. R.	Twinning and Amorphization in Naturally Shocked Plagioclase: An EBSD Study [#6276] Shock-induced amorphization of plagioclase is initiated along micro-twins and is controlled by their crystallographic orientation. Can we consider these micro-twins the equivalent of planar deformation features in plagioclase?
12:30 p.m.	Tielke J. A. * Peslier A. H. Christoffersen R. Erickson T. Cintala M. J. Morris R. V. Montes R. Cline C. J.	Hydrogen Mobility During Shock Deformation in Olivine [#6453] We carried out impact experiments on olivine crystals to investigate H mobility during shock. Our results reveal H diffusion along dislocations is the dominant transport mechanism. Minor changes in H storage are observed in shocked olivine.

Monday, July 8, 2019

DYNAMICAL EVOLUTION AND PROCESSES IN THE SOLAR NEBULA

10:45 a.m. Conference Room 1

Chairs: Rachel Smith and Justin Simon

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
10:45 a.m.	Smith R. L. * Blake G. A. Pontoppidan K. M. Boogert A. C. A.	Temporal Variability in Carbon Monoxide Abundances in Young Stellar Objects and Implications for the Early Solar System [#6486] We present initial findings in exploring short-term variability of molecular reservoirs observed toward a range of YSOs. Thus far we find that CO isotopologue abundances may vary more significantly in massive versus solar-type protoplanetary systems.
11:00 a.m.	Wasson J. T. *	Further (Petrographic) Evidence that CV CAIs had a Presolar Origin [#6508] Isotopic compositions show that CAIs cannot be made from the same stuff as chondrites. If they formed in the solar system, ^26Al/^27Al ratios require them to have formed about 2 Ma earlier than chondrules. They do not show igneous rims, and are the last materials accreted to the CV formation region.
11:15 a.m.	Nuth J. A. III * Abreu N. M. Clark B. Johnson N. M. Glavin D. P.	Do We Need a New Definition for a Comet? [#6452] Forming as a continuum of dry asteroids to wet comets, mixed thoroughly by the Nice-Grand Tack. Rocks now reside in the Oort Cloud and comets in the Main Belt - all tempered by 4 billion years of metamorphism.
11:30 a.m.	Simon J. I. * Armytage R. M. G. Tappa M. J.	Non Mass-Dependent Calcium Isotope Effects In and Among Planetary Materials [#6419] Improved non mass-dependent calcium isotope measurements are being made for planetary materials and their components in order to study the formation of rocky bodies in the protoplanetary disk.
11:45 p.m.	Alexander C. M. O’D. *	A Chondrule Earth? [#6500] It is suggested that the Earth formed from material that was produced by similar processes to CC chondrules and refractory inclusions in an isotopically heterogeneous nebula.
12:00 p.m.	Woo J. M. Y. * Brasser R. Matsumura S. Mojzsis S. J. Ida S.	The Curious Case of Mars’ Formation [#6088] We tested N-body dynamical models in reproducing the isotopic composition differences between Earth and Mars. We found that the Classical model works better than the Grand Tack model only if we include massive Mars analogues from N-body simulations.

Monday, July 8, 2019

SPECIAL SESSION: RYUGU, BENNU, AND SMALL BODIES II

2:30 p.m. Auditorium

Chairs: Timothy McCoy and Toru Yada

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
2:30 p.m.	McCoy T. J. * Connolly H. C. Jr. Corrigan C. M. Jawin E. R. Sandford S. Molaro J. DellaGiustina D. N. Rizk B. Nolan M. C. Lauretta D. S. the OSIRIS-REx Team	Brecciated Boulders: Evidence for Impact Mixing on Bennu’s Parent Body [#6428] Meter-sized boulders on asteroid Bennu appear to be genomict breccias, consistent with widespread formation of regolith breccias among hydrated carbonaceous chondrites. These meter-sized boulders likely required processes on Bennu’s parent body.
2:45 p.m.	Nakamura-Messenger K. Connolly H. C. Jr. Lauretta D. S. Messenger S. *	The OSIRIS-REx Science Value Map of Asteroid Bennu [#6188] We will present observations of Bennu that are being used to assess the relative science value of candidate sampling sites and will discuss methods the team is using to integrate these observations into science value scores.
3:00 p.m.	Yada T. * Abe M. Nakato A. Yogata K. Sakamoto K. Nishimura M. Okada T. Yoshitake M. Kumagai K. Iwamae A. Furuya S. Hayashi T. Yamamoto D. Tachibana S. Yurimoto H.	Preparation for Curating Samples Recovered from C-Type Asteroid Ryugu by Hayabusa2 and Present Status of Curation of Samples Returned from S-Type Asteroid Itokawa by Hayabusa [#6351] Hayabusa2, which should have recovered surface materials on C-type asteroid Ryugu in last Feb., will return them to the Earth at the end of 2020. Most of the apparatuses for their handling and initial description have been prepared in these years.
3:15 p.m.	Bibring J-P. Brunetto R. Hamm V. Matsuoka M. MoussiSoffys A. Nakamura T. Nakato A. Okada T. * Pilorget C. Riu L. Yada T. Yogata K.	Compositional Characterization of the Hayabusa 2 Returned Samples with MicrOmega, Within the Curation Facility [#6177] The composition of the Hayabusa2 returned samples will be characterized, within the curation facility, by hyperspectral near infrared microscopy, using the MicrOmega instrument.
3:30 p.m.	Ito M. * Tomioka N. Uesugi M. Uesugi K. Ohigashi T. Yamaguchi A. Imae N. Karouji Y. Shirai N. Yada T. Abe M.	The Ryugu Grain Analysis: Approach by the Phase 2 Curation “Team Kochi” [#6082] We, the Phase2 curation team “Kochi”, report a plan of the coordinate micro-analysis for the Ryugu grain. We will show progress of analytical techniques and devices based on recent repots by the Hayabusa 2 spectroscopic studies.
3:45 p.m.	Potin S. * Beck P. Bonal L. Usui F. Vernazza P. Schmitt B.	Investigation of the Hydration Features of Asteroids with Carbonaceous Chondrites: Experimental Analysis and Comparison with Astronomical Observations [#6023] We investigated the effect of heating on the reflectance spectra of carbonaceous chondrites, with focus on the hydration features. We then compare our spectra with astronomical observations of Ryugu, Bennu and Main Belt Asteroids.
4:00 p.m.	Piani L. * Marrocchi Y. Vacher L. G. Piralla M. Bizzarro M. Alexander C. M. O’D. Howard K. T.	Hydrogen Isotopic Composition of Water in Hydrated Chondrites [#6135] Using in situ analyses by SIMS, we estimated the D/H composition of water in different groups and types of chondrites to constrain the isotopic distribution of water in the protoplanetary disk at the time and places of asteroid formation.
4:15 p.m.	Harries D. * Fürst R. Langenhorst F.	Thermal Release of Water from CM2 Chondrites: Insight from Mass Spectrometric Evolved Gas Analysis (DEGAS) [#6361] We have studied the thermal release of water from Murchison, Jbilet Winselwan and reference minerals using a custom-build mass spectrometric system. Significant differences are observed among the two, confirming water-loss in Jbilet Winselwan.
4:30 p.m.	Hilchenbach M. * Paquette J. Fischer H. Stenzel O. Merouane S.	Heterogeneity of Cometary Dust Particles in the Coma of Comet 67P [#6215] The COmetary Secondary Ion Mass Analyser (COSIMA) instrument on board ESA’s Rosetta mission to comet 67P/Churyumov–Gerasimenko has collected and analysed dust particles in-situ in the inner coma from August 2014 to September 2016.
4:45 p.m.	Arai T. * DESTINY+ Team	DESTINY+: Flyby of Asteroid (3200) Phaethon and In-Situ Dust Analyses [#6497] DESTINY+ is a mission for flyby of Geminids parent asteroid Phaethon and in-situ dust analyses.
5:00 p.m.	Glavin D. P. * Squyres S. W. Nakamura-Messenger K. Hayes A. G. Mitchell D. F. Moran V. E. Houghton M. B. Douglas-Bradshaw D. Lauretta D. S. Messenger S. Yamada K. Okazaki S. Satoh Y. Maru Y. Nakao T. Kukita A. Shimoda T. Yamawaki T. Nakamura T. Parker J. E. Wegel D. C. Peabody H. L. Dworkin J. P. Nguyen A. N. Clemett S. Zega T. J. Mazarico E. Rowlands D. Aslam S. A. Gorius N. Quilligan G. Furukawa Y. Kimura Y. Takigawa A. Blake G. Mumma M. J. Milam S. N. Gerakines P. A. Lunine J. I. Mitchell J. L. Pace L. F. Herd C. D. K. Gorevan S. Spring J. Zacny K. Chu P. C. Hasegawa M. M. Guttler C. Sierks H. Vincent J. B. Oklay N. Campins H. Fernandez Y. Makowski J. Oberg D. Morse E. L. Soderblom J. M. Bodewits D. Kelley M. Davidsson B. Johnson J. Kulchitsky A. Kirk R. Leshin L. Oberg K. Ravine M. CAESAR Project Team	Overview of the Comet Astrobiology Exploration Sample Return (CAESAR) New Frontiers Mission [#6002] The Comet Astrobiology Sample Return (CAESAR) New Frontiers mission will acquire and return to Earth for laboratory analysis a minimum of 80 grams of surface material, including volatiles, from the surface of comet 67P/Churyumov-Gerasimenko.
5:15 p.m.	Kelley M. S. * Landis R. R. Reddy V.	Planetary Defense Exercises with Real Asteroids: 2012 TC4 and 1999 KW4 [#6410] We summarize results from two planetary defense exercises involving real near-Earth asteroids. An observing campaign with 2012 TC4 was used as an end-to-end planetary defense exercise, while a campaign with 1999 KW4 focused on characterization.

Monday, July 8, 2019

IMPACTS ON EARTH: INFALL TO CRATERS

2:30 p.m. Small Auditorium

Chairs: Bingkui Miao and Gunther Kletetschka

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
2:30 p.m.	Soens B. * van Ginneken M. Debaille V. Vanhaecke F. Claeys Ph. Goderis S.	Microtektites from the Sør Rondane Mountains, East Antarctica: Towards an Extension of the Australasian Strewn Field? [#6144] We report the discovery of ca. 30 microtektites in sediment traps from the Sør Rondane Mountains, East Antarctica. Based on their physical and chemical properties, we suggest that they extend the western-most lobe of the Australasian strewn field.
2:45 p.m.	Campanale F. Mugnaioli E. Folco L. * Gemmi M. Lee M. R. Daly L. Glass B. P.	Evidence for Subsolidus Quartz-Coesite Transformation in Impact Ejecta from the Australasian Tektite Strewn Field [#6152] We present evidence for direct solid-state quartz-to-coesite transformation in shocked coesite-bearing quartz ejecta from the Australasian tektite/microtektite strewn field. These findings contradict conventional models for coesite formation.
3:00 p.m.	Xiao Z. * Ma Y. Yan P. Pu J. Kenkmann T. Wulf G. Cui J.	The Spatial Density of In-Situ Australasian Tektites in Southern China [#6166] We report the line density of possible in-situ tektites collected from the southern China.
3:15 p.m.	Hildebrand A. R. *	The Australasian Tektite Strewn Field (Highly Oblique) Source Impact is in Champasak Province, Laos [#6489] The source craters of the Australasian tektite strewn field are two small elliptical craters (named Champasak A and B) in southern Laos resulting from a highly oblique impact. The larger crater’s melt sheet is similar to average tektite composition.
3:30 p.m.	Van Ginneken M. * Artemieva N. Claeys P. Debaille V. Decrée S. Hecht L. Yang S. Kaufmann F. Soens B. van Maldeghem F. Humayun M. Goderis S.	Meteoritic Ablation Debris from the Sør Rondane Mountains, Antarctica [#6010] We report the discovery of meteoritic ablation debris in the Sør Rondane Mountains, Antarctica. Chemical properties show that they formed during a large airburst event in the lower atmosphere.
3:45 p.m.	McMullan S. * Collins G. S. Davison T. M.	Asteroid to Airburst; Comparing Semi-analytical Airburst Models to Hydrocodes [#6354] Atmospheric entry models of decametre size asteroids need to be quick and accurate. Semi-analytical models are fast but make many assumptions. Hydrocodes make fewer assumptions, but computationally expensive. Can semi-analytical models be refined?
4:00 p.m.	Miao B. * Wang Y.	The Shock Effects of Granitic Impactite from Aletai Iron Meteorite, Xinjiang, China [#6031] A new kind of granitic impactite from Aletai iron meteorite is found. It is the product by the impact of iron meteorite directly on granite rock base. Here the shock effects are introduced, the condition of the impact is estimated and the target rock is discussed.
4:15 p.m.	Lambert P. * CIRIR Consortium	“Mission to Rochechouart” Project: A Review [#6446] The “Mission to Rochechouart” project was presented at the MetSoc meeting in Casablanca 5 years ago. We report on what has been achieved since its announcement, and what will be achieved in the future.
4:30 p.m.	Selkirk S. * Gibson R. L. Tshibubudze A.	Evolving Strain Patterns During Impact in the World’s Largest Central Uplift — Evidence for Declining Strain Rate and Strain Localisation Within Minutes [#6480] Evolving strain patterns during impact in the Vredefort Dome – evidence for declining strain rate and strain localisation using marker horizons and palinpastic restoration.
4:45 p.m.	Baratoux D. * Niang C. A. B. Reimold W. U. Sapah M. S. Jessell M. W. Faye G. Bouley S. Vanderheaghe O.	Bosumtwi Impact Structure, Ghana: Evidence for Fluidized Emplacement of the Ejecta [#6485] This presentation will focus on recent field observations and remote sensing analyses of the Bosumtwi impact structure demonstrating that the Bosumtwi impact crater shares many characteristics with the rempart craters on Mars.
5:00 p.m.	Kletetschka G. * Kavková R. Navátil T. Takác M. Prach J. Vondrák D. Stuchlik E. Štorc R. Švecová E. Horická Z. Klokocník J. Kostelecký J. Bezdek A. Rogozin D. Y. Meydus A. Krivobokov L. Mukhortova L. Darin A. V. Serra R. Stanghellini C. Gladysheva O. G.	New Implications for Tunguska Explosion Based on Magnetic, Dendrological, and Lacustrine Records [#6506] Tunguska layer in the Zapoviednoe lake resembles clay. While the content of Fe dropped (160ppm-19ppm) the mag. susc. increased 2-fold. This is a record of quick and intense burst of energy, melting and vaporizing the dust, forming nanophase Fe.
5:15 p.m.	Master S. * Cooper G. R. J. Chakraborti T. M. Mukherjee T.	First Evidence for an Impact Origin of the >45 km Diameter Simlipal Ring Structure, Singhbhum Craton, Odisha, India [#6079] The Simlipal ring structure consists of basalts interbedded with quartzites, with a differentiated mafic-ultramafic intrusion in the center. Striated partial shatter cones are the first macroscopic evidence for an impact origin of the structure.

Monday, July 8, 2019

DIFFERENTIATED METEORITES I: MOSTLY HEDS

2:30 p.m. Conference Room 1

Chairs: Qingzhu Yin and David Mittlefehldt

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
2:30 p.m.	Ono H. * Takenouchi A. Mikouchi T. Yamaguchi A.	Tridymite Polymorph in Cumulate Eucrites Indicating Their Thermal Histories [#6241] We studied tridymite polymorphs in 3 cumulate eucrites to understand thermal histories below 400 C. We found orthorhombic tridymite lamellae in the monoclinic host in Moama, suggesting its faster cooling at low temperature than other 2 samples.
2:45 p.m.	Warren P. H. *	Two Unbrecciated, Vesicular, Possibly Paired Eucrites, Both Totally Unmetamorphosed and Extraordinarily Sodium-Rich: Northwest Africa 7035 and Northwest Africa 8661 [#6509] Two eucrites from Northwest Africa are remarkably alike in many ways, including vesicularity, low metamorphism, and high sodium.
3:00 p.m.	Yin Q. Z. * Zhou Q. Sanborn M. E. Ziegler K. Li Q. L. Liu Y. Li C. L.	Petrography and U-Pb Chronology of Anomalous Eucrite Serra Pelada [#6051] Serra Pelada is a brecciated eucrite. The latest petrography studies have described this meteorite as a monomict eucritic breccia. Here we report the petrography and zircon U-Pb dating results for this new meteorite.
3:15 p.m.	Kanemaru R. * Imae N. Yamaguchi A. Nishido H.	Shock Metamorphic Degree of Eucrites Based on the Textual and XRD Analyses [#6347] We performed the XRD analyses of basaltic and cumulate eucrites. The macro XRD data of eucrites has correlations for the shock degrees estimated from the petrographic study.
3:30 p.m.	Mitchell J. T. * Tomkins A. G.	Compositional Diversity of Orthopyroxenitic Diogenites and Olivine-Bearing Diogenites Linked to Variable fO2 and Post-Eucritic Magmatism [#6065] Modelling of orthopyroxene compositions shows that observed diogenite trends may be the result of heterogeneous source fO2 combined with prior eucrite extraction. As such, diogenites represent crustal intrusions and no magma ocean cumulates.
3:45 p.m.	Saito T. * Hidaka H. Lee S.-G.	^176Lu–176Hf and 87Rb–*87|Sr Systematics and Rare Earth Element Abundances of Diogenites: Evidence for Their Crystallization from Partial Melts of the Vestan Mantle [#6233] We applied ^176Lu–^176Hf decay system on diogenites and obtained the age and initial ^176Hf/^177Hf ratio of them. Alhough the age of diogenites is identical to that of eucrites with in the error range, the initial ratio shows significant discrepancy.
4:00 p.m.	Mittlefehldt D. W. * Buckley W. P.	The Vestan Regolith: Petrologic-Chemical Study of HED Polymict Breccias [#6391] Regolith mixing processes on asteroid (4) Vesta are examined through petrologic and bulk-compositional analyses of polymict eucrites, polymict diogenites and howardites.
4:15 p.m.	Guo Z. * Liu J. Qin L. Gannoun M. Boyet M. Zajacz Z. Bouvier A.	Sm-Nd, Lu-Hf and Mn-Cr Compositions of Eucrite, Diogenite and Ungrouped Achondrites: Implications for the Formation and Sources of Differentiated Planetesimals [#6352] The Sm-Nd and Lu-Hf chemistry were conducted in superclean lab in The University of Western Ontario. Unspiked isotopic analyses of Sm and Nd on all samples, and Mn-Cr analyses on NWA 12338 are ongoing.
4:30 p.m.	Haba M. K. * Wotzlaw J. F. Lai Y.-J. Yamaguchi A. Schönbächler M.	Chronological Evidence for Mesosiderite Formation on Vesta by a Hit-and-Run Collision [#6242] First comprehensive U-Pb dating of mesosiderite zircons revealed that the crust formation occurred 4,558.5 Myr ago followed by silicate-metal mixing at 4,525.4 Myr. We propose mesosiderite formation on Vesta based on these zircon dates.
4:45 p.m.	Deligny C. * Füri E. Deloule E.	Origin and Timing of Volatile (N, H) Delivery to the Angrite Parent Body [#6045] We measured, for the first time, the N content and isotopic ratio (^15N/^14N) of glass inclusions, interstitial glasses, and silicate minerals in D’Orbigny and Sahara 99555 by in-situ high-resolution secondary ionization mass spectrometry.
5:00 p.m.	Hayashi H. * Mikouchi T. Bizzarro M.	Crystallization History of Northwest Africa 7203 Angrite [#6153] Mineralogy of the NWA 7203 angrite suggests unusual crystallization history: fine-grained areas rapidly crystallized with Mg-rich olivine xenocrysts as seeds, then the melt became Mg-rich (magma mixing?), and finally coarse-grained areas formed.
5:15 p.m.	Schiller M. * Bizzarro M. Siebert J.	Iron Isotope Evidence for Very Rapid Accretion and Differentiation of the Proto-Earth [#6255] We report nucleosynthetic Fe isotope signatures for all major meteorite classes and use these data to infer the driving growth mechanism, collisional versus pebble accretion, of the proto-Earth.

Monday, July 8, 2019

BARRINGER LECTURE

7:00 p.m. Auditorium

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Times	Guest Lecturer	Presentation
7:00 p.m.	Prof. Kazuyuki Shiraishi (National Institute of Polar Research)	[INVITED] The Search for Antarctic Metorites — Fifty Years from the Discovery of the Yamato Meteorites”

Tuesday, July 9, 2019

VIEWS OF MARS FROM METEORITES, ANALOGS AND REMOTE-SENSING

9:00 a.m. Auditorium

Chairs: Minako Righter and John Bridges

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
9:00 a.m.	Bouvier L. C. * Schiller M. Fehr M. Costa M. Connelly J. N. Nemchin A. Schonbachler M. Bizzarro M.	Probing Magma Ocean Crystallization in Rocky Planets Using Zirconium Isotopes — Preliminary Results from Ancient Zircons from Earth and Mars [#6362] We report the ^92Nb-^92Zr systematics of ancient zircons from Earth and Mars dating back to the planets’ earliest histories. We show the presence of small resolvable deficits in ^92Zr indicative of early formation of reservoirs with subchondritic Nb/Zr.
9:15 a.m.	Tomkins A. G. * Alkemade S. L. Nutku S.	Mysteriously Missing Martian MIF-S [#6063] We use SIMS to examine the MIF-S signatures of martian meteorites, including basaltic breccia NWA 8171, and combine with LA-ICP-MS of sulfides for PGE abundance. We discuss why non-zero MIF-S is not seen in NWA 8171 and other martian meteorites.
9:30 a.m.	Bellucci J. J. * Whitehouse M. J. Nemchin A. A.	Tracing Martian Surface Interactions with the Triple O Isotopic Compositions of Meteoritic Phosphates [#6319] The triple O compositions of phosphates from six martian meteorites has been measured by SIMS and will be used to constrain interactions with the martian surface recorded by these minerals and define the O-isotope composition of the surface of Mars.
9:45 a.m.	Lin Y. T. * Hu S. Yamaguchi A. Zhang J. C. Hao J. L. Yang W.	Global Presence of Subsurface Glacier on Mars: Evidence from the Correlation Between Water Contents and D/H Ratios of Martian Meteorites [#6238] The water contents and D/H ratios of melt inclusions of all 6 shergottites show mixing of martian mantle and underground water. The water was likely produced by melting of the global reservoir of subsurface glacier with delta D of 5300–6000 per mil.
10:00 a.m.	Davidson J. * Wadhwa M. Hervig R. L.	Water on Mars: Insights from Nominally Anhydrous Pyroxene in Nakhla and Northwest Africa 7034 [#6198] We report water contents and H isotopic compositions of pyroxene in the martian clinopyroxenite Nakhla and the regolith breccia NWA 7034.
10:15 a.m.	Wadhwa M. * Stephant A. Sutton S. Bell D.	Spatially Correlated Analyses of Hydrogen Isotope Compositions and Iron Valence in Dish Hill Kaersutites: Implications for Martian Igneous Samples [#6473] We have investigated microscale variations in D/H ratios, water abundances and Fe valence in carefully characterized terrestrial igneous samples with the goal of understanding the variability in hydrogen isotope compositions and redox within and among the martian meteorites.
10:30 a.m.	Humayun M. * Yang S. Irving A. J. Righter K.	Sulfide Assimilation and Mineralization in Ancient (2.4 Ga) Shergottites [#6380] Extreme fractionation of Ni and Co, and enrichments of Zn, indicate the first evidence of ore mineralization of potentially economic scale on Mars.
10:45 a.m.	Ostwald A. M. * Udry A. Gross J.	Melt Inclusion Analyses to Constrain Parental Magma Compositions of the Nakhlite Meteorites [#6106] Melt inclusions in a suite of nakhlites (martian meteorites) are analyzed for major and minor element abundances using microanalytical techniques in order to reconstruct the nakhlite parental magma composition.
11:00 a.m.	Krämer Ruggiu L. * Gattacceca J. Devouard B. Udry A. Debaille V. Rochette P. Lorand J.-P. Bonal L. Beck P. Sautter V. Meier M. M. M. Gounelle M. Marrochi Y. Maden C. Busemann H.	Caleta el Cobre 022: An Unusual Nakhlite with Abundant Aqueous Alteration [#6379] We describe Caleta el Cobre 022, a new Nakhlite with unusal features.
11:15 a.m.	Cao F. * Flemming R. L. Moser D. E. Izawa M. R. M.	Mineralogy and Shock Effects in Martian Regolith Breccias [#6456] Four slabs and one powder sample were used for the micro-XRD, powder-XRD, Raman, and SEM-EDS experiments. SEM-EDS and micro-XRD experiments were done in Western University. Raman and powder-XRD were done in IPM, Okayama University.
11:30 a.m.	Liu Y. * Eckley S. A. Blumenfeld E. H.	Most Shergottites were Once Vesicular: Evidence from 3D Computed X-Ray Tomography [#6207] Shergottites with impact melt pockets were vesicular before impact, as shown by 3D textural relationship between fractures, residual vesicles and impact melt pockets in several shergottites.
11:45 a.m.	Righter M. * Lapen T. J. Irving A. J. Hoefnagels B.	Sm-Nd, Lu-Hf and U-Pb Systematics of Northwest Africa 11509 Shergottite. [#6477] The Lu-Hf systematics of NWA 11509 shows disturbed system. In-situ phosphates U-Pb dating results show very recent melting event likely due to ejection from Mars.
12:00 p.m.	Rahib R. R. Udry A. * Howarth G. H. Gross J. Combs L. M. Laczniak D. L. Day J. M. D.	Formation and Emplacement of Martian Poikilitic Shergottites [#6205] All martian poikilitic martian shergottites underwent similar emplacement processes, including various sills at different locations at the martian surface, and are likely linked to the other shergottites.
12:15 p.m.	Orr K. J. * Forman L. V. Benedix G. K.	Geochemical and Petrological Characterization of Four New Shergottites [#6220] Martian meteorites are extremely rare. Therefore the discovery of new meteorites represents a significant opportunity to expand our current understanding of Mars. Here we present geochemical and petrological data on four new shergottites.
12:30 p.m.	Bridges J. C. * Cousin A. Sautter V. Rapin W. Bowden D. Thompson L. Schwenzer S. P. Bedford C. Payre V. Gasnault O. Forni O. Pinet P. Wiens R. Yingst R. A.	Feldspathic Cumulate Samples and Plutonic Rocks in Gale Crater: Comparisons to Martian Meteorites [#6326] Feldspathic cumulates and basaltic plutonic rocks have been identified in Gale Crater, unique from any meteorites or MER samples. The feldspar cumulates show variable hydration and silicification, and contain a possible ferrohastingsite.
12:45 p.m.	Benedix G. K. Lagain A. L. Bland P. A. * Chai K. Meka S. Norman C. Towner M. C. Anderson S. Paxman J. Cary F. Fairweather J.	Towards a Surface Age Map of Mars at Ultimate Resolution, and the Search for Source Craters of the Martian Meteorites [#6355] Finding the source craters of the shergottite meteorites on Mars is like finding a needle in a haystack. We have an automated algorithm that will help and provide unprecedented resolution of the age of the martian surface.

Tuesday, July 9, 2019

CHONDRULES AND CHONDRITES I

9:00 a.m. Small Auditorium

Chairs: Leonardo Baeza and Martin Bizzarro

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
9:00 a.m.	Nakashima D. * Kimura M. Yamada K. Noguchi T. Ushikubo T. Kita N. T.	Oyxgen Isotope Systematics of Porphyritic Chondrules and Their Fragments in CH and CB Chondrites [#6043] Type I porphyritic chondrules and their fragments in CH and CB chondrites show a trend that the Δ^17O values increase with increasing Mg#, which is explained by an addition of ^16O-poor carbon-rich organics to the ^16O-rich precursors.
9:15 a.m.	Baeza L. * Ireland T. R. Ávila J. N. Mallmann G.	Oxygen Isotope Systematics of Ordinary Chondrite Chondrules and Their Main Chondrule Population [#6375] Chondrule populations have been suggested in terms of oxygen isotopes but never statistically assessed. We focus on the in situ O-isotope of chondrules from unequilibrated ordinary chondrites of the different iron groups (H, L, and LL).
9:30 a.m.	Nagashima K. * Libourel G. Schrader D. L. Krot A. N.	Abundant ^16O-Rich Olivines in Chondrules from Ordinary Chondrites: Implications to Outward Transport of Dust in the Protoplanetary Disk [#6218] O-isotope imaging of agglomeratic chondrules from UOCs revealed abundant relict ^16O-rich olivine. They are most likely related to AOAs, formed in an innermost region of the disk and subsequently transported outward by turbulent diffusion.
9:45 a.m.	Villeneuve J. * Marrocchi Y.	Origin and Evolution of the Oxygen Isotopic Composition of Chondrules [#6345] This study presents new EPMA and SIMS data allowing to reveal previously unrecognized internal structures within type I chondrules from NWA 5958 and Kaba and provides new hints on the origin and the evolution of the oxygen isotopic composition.
10:00 a.m.	Matsuda N. * Sakamoto N. Tachibana S. Yurimoto H.	Heating History of Igneous Rim Formation Deduced from Micro-Scale Migration of Oxygen Isotopes [#6084] We present two-dimensional chemical and oxygen isotopic distributions in an igneous rim of a chondrule within CV chondrite with sub-micrometer resolution in order to constrain the rim formation process.
10:15 a.m.	Shimizu K. * Alexander C. M. O’D. Hauri E. H. Sarafian A. R. Nittler L. R. Wang J. Jacobsen S. D. Mendybaev R. A.	Hydrogen Abundances and Isotope Compositions of Chondrules in Carbonaceous and Ordinary Chondrites [#6467] D-rich H isotopic composition of mesostases in ordinary chondrites compared to those in carbonaceous chondrites due to inheritance from D-rich ice or Fe oxidation by water.
10:30 a.m.	Bizzarro M. * Bollard J. Connelly J. N. Schiller M.	Evidence for Delayed Chondrule Formation in the Outer Solar System [#6068] We report on the U-corrected Pb-Pb ages of two chondrule populations understood to have formed in the inner and outer disk regions based on their ^54Cr/^52Cr compositions. We show a resolvable age difference of 1.4 ± 0.8 Myr between the two groups.
10:45 a.m.	Hiyagon H. * Fukuda K. Tanimura Y. Fujiya W. Sugiura N. Kagoshima T. Takahata N. Sano Y.	Excess Boron 10 Observed in Chondrules from Y82094 (C3.2) Chondrite [#6263] Be-B isotopic analyses were conducted for chondrules in Y82094 (ungrouped C3.2) chondrite. Clear excesses in ^10B were observed in the four chondrules so far analyzed.
11:00 a.m.	Barosch J. * Ebel D. S. Hezel D. C. Alpert S.	Formation of Chondrules and Matrix in Kakangari Chondrites [#6305] We present a comprehensive dataset, containing petrographic and chemical data to understand the origin and formation of chondrule textures, bulk chondrule compositions and chondrule-matrix complementarities in Kakangari chondrites.
11:15 a.m.	Bigolski J. N. * Weisberg M. K. Ebel D. S.	Plastic Deformation of Chondrules in Ordinary and Enstatite Chondrites: Evidence of Hot Accretion or Impact-Related Regolith Processing? [#6413] Plastic deformation of chondrules are evident in many primitive meteorites. We examine models of the formation of deformation textures in unequilibrated ordinary chondrites and Type 3 enstatite chondrites.
11:30 a.m.	Suttle M. D. * Folco L.	Pseudomorphic Chondrules in Hydrated Fine-Grained Micrometeorites — and the Identification of a New Hydrated Parent Body [#6256] Chondrules in fine-grained micrometeorites are aqueously altered, ~50% are entirely replaced (pseudomorphic). O-isotope data on a single micrometeorite reveals a new group not associated with known hydrated chondrites.
11:45 a.m.	Koch T. E. * Spahr D. Merges D. Beck A. A. Christ O. Fujita S. Genzel P.-T. Kerscher J. Lindner M. Mederos Leber D. Wilde F. Morgenroth W. Winkler B. Brenker F. E.	EXCISS, a Chondrule Formation Experiment Aboard the ISS — First Results [#6388] We present the first results of an chondrule formation experiment which was carried out aboard the International Space Station ISS.
12:00 p.m.	Arakawa S. * Nakamoto T.	Compound Chondrule Formation via High-Speed Collision of Supercooled Droplets in Optically Thin Shock Waves [#6113] Chondrule precursors can maintain their supercooling in optically thin shock waves. The collision frequency between crystallized chondrules and supercooled droplets is consistent with the fraction of compound chondrules in nonporphyritic chondrules.
12:15 p.m.	Bodénan J.-D. * Survillle C. Mayer L. Schönbächler M.	Shocks Produced by Jupiter in the Context of Chondrule Formation: Effects of Cooling and Dust Densities [#6272] This work follows up on previous results, in which a Jupiter-mass planet generated temperatures sufficient to melt chondrule precursors. Here, we further explore the role of dust and cooling in the disk and how they affect shock temperature.
12:30 p.m.	Sirono S. * Turrini D.	Chondrule Formation Through Collisions Between Planetesimals Containing Volatile Materials [#6081] We propose that collisions of low temperature planetesimals containing volatile material naturally explain the size and cooling rate of chondrules. Rapidly heated volatile material quickly expands and break up the silicate melt down to small sizes.
12:45 p.m.	Greenwood J. P. * Herbst W. Abe K.	A Radiative Heating Model for the Formation of Chondrites and the Last Melting Event of Chondrules [#6422] A new radiative heating model that relates chondrite formation to the last melting event that chondrules experienced.

Tuesday, July 9, 2019

PRESOLAR GRAINS AND THE ORIGINS OF ISOTOPIC ANOMALIES IN METEORITIC MATERIALS

9:00 a.m. Conference Room 1

Chairs: Jean-David Bodénan and Rhonda Stroud

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
9:00 a.m.	Fujimoto Y. * Krumholz M. R. Tachibana S.	Short-Lived Radioisotopes in Meteorites from Galactic-Scale Correlated Star Formation [#6034] Star formation is correlated on galactic scales, so that ejecta preferentially enrich atomic gas that will subsequently be accreted onto GMCs. New generations of stars preferentially form in patches of the Galaxy contaminated by previous generations.
9:15 a.m.	Dwarkadas V. V. * Dauphas N. Meyer B.	Accounting for SLRs in the Early Solar System with a Triggered Star Formation Model for the Solar System [#6108] Formation of the solar system by triggered star formation in the shell of a Wolf-Rayet bubble can account for the abundances of most short-lived radionuclides found in the early solar system.
9:30 a.m.	Heck P. R. * Greer J. Kööp L. Trappitsch R. Gyngard F. Busemann H. Maden C. Ávila J. N. Davis A. M. Wieler R.	Evidence for Presolar Grain SiC Aggregates from Cosmogenic Nuclides [#6112] We analyzed cosmogenic He and Ne in large presolar SiC from Murchison. By utilizing the large difference in nuclear recoil loss of cosmogenic ^3He and ^21Ne we conclude that some grains were likely part of large aggregates in the interstellar medium.
9:45 a.m.	Stephan T. * Davis A. M.	Molybdenum in Presolar Silicon Carbide Grains Reveal Details of s-, r-, and p-Process Nucleosynthesis [#6107] A constant ratio between p- and r-process molybdenum has been observed in presolar SiC grains, primitive meteorites, and the solar system. It shows that r- and p-processes must be strongly correlated over time and perhaps space in the Galaxy.
10:00 a.m.	Amari S. * Pignatari M.	Sodium-22 Production in Supernovae [#6325] Many presolar graphite grains from supernovae contain ^22Ne from the decay of 22Na. Recent model calculations indicate that 22Na may be produced in the outer zone during explosive H burning.
10:15 a.m.	Takigawa A. * Kim T.-H. Igami Y. Umemoto T. Tsuchiyama A. Koike C. Matsuno J. Watanabe T.	Formation of Metastable Alumina Dust around AGB Stars: Condensation Experiments Using Induction Thermal Plasma Systems [#6341] We performed condensation experiments of Al-Si-Mg-O gases using ITP systems. Comparison between MIR spectra of condensates and circumstellar dust emission indicates that metastable Al2O3 containing ~10% of Si is commonly present around AGB stars.
10:30 a.m.	Verdier-Paoletti M. J. * Nittler L. R. Wang J.	High-Resolution Measurements of Mg, Si, Fe and Ni Isotopes of O-Rich Presolar Grains [#6433] Mg-Si isotopes measurements in presolar silicates and oxides of Group 1 yield compositions that cannot be solely explained by GCE but could rather suggest a contribution to the meteoritic stardust budget by super-AGB stars.
10:45 a.m.	Leitner J. * Hoppe P. Kodolányi J.	Presolar Grains from Higher-Mass AGB Stars? [#6356] We report the identification of several presolar silicate grains with Mg-isotopic signatures indicative of hot bottom burning, indicative of an origin in higher-mass AGB stars.
11:00 a.m.	Nittler L. R. *	Isotopic Imprints of Super-AGB Stars and their Supernovae in the Solar System [#6424] Eight to ten solar mass stars / Make interesting stuff / Seen in the solar system?
11:15 a.m.	Meyer B. S. *	Models of the Chemical Evolution of Calcium, Titanium, and Chromium Isotopes and Their Premolar Carriers [#6417] I present models of the Galactic chemical evolution of the isotopes of calcium, titanium, and chromium and their possible carriers into the early solar system. The results can help our understanding of isotopic anomalies in primitive meteorites.
11:30 a.m.	Ek M. Hunt A. C. Lugaro M. Schönbächler M. *	The Origin of the Missing Nucleosynthetic Isotope Variations in Heavy Refractory Elements [#6252] We propose that the s-process bulk rock heterogeneity is the result of the initial metallicity of the AGB stars that contributed most presolar grains to the solar system. This can explain the missing nucleosynthetic anomalies in heavier elements.
11:45 a.m.	Sakuma K. * Hidaka H. Yoneda S.	Ba Isotopic Heterogeneity in CM Chondrites [#6232] In this study, isotopic analysis of Ba and quantitative analyses of Rb, Sr, Cs, Ba and REE abundances from the acid leachates of CM2 chondrites were performed to discuss the origin of Ba isotopic variations.
12:00 p.m.	Meshik A. * Schovsbo N. H. Pravdivtseva O.	Xenon Isotopes in Scandinavian Alum Shales: A Clue for the Origin of P1(Q) and P3 Xenon Components in Nanodiamond-Rich residues from Primitive Meteorites [#6332] Low-temperature xenon components in nanodiamond residues from primitive meteorites are likely of “local” than “presolar” origin.
12:15 p.m.	Stroud R. M. *	Structural and Elemental Transformation of Meteoritic Nanodiamonds During In Situ Heating in a UHV Scanning Transmission Electron Microscope [#6457] In situ heating stage studies of “presolar” nanodiamond residues in a UHV STEM provide context for the interpretation of stepped combustion and pyrolysis experiments, for determination of nanodiamond origins.
12:30 p.m.	Hibiya Y. * Iizuka T. Enomoto H.	The Initial Abundance of Niobium-92 in the Outer Solar System [#6370] We’ve found that the initial abundance of ^92Nb in the outer solar system was distinctly higher than the value in the inner solar system. We discuss the implications of the finding for the early solar system chronology and its nucleosynthetic origin.
12:45 p.m.	Huss G. R. *	Interpreting the Isotopic Dichotomy Among Solar System Materials [#6200] The isotopic dichotomy among chondritic materials is often explained in terms of accretion inside and outside of Jupiter’s orbit. This presentation will argue that nebular processes operating in the asteroid belt can explain the observations.

Tuesday, July 9, 2019

CHONDRULES AND CHONDRITES II

2:30 p.m. Auditorium

Chairs: Wei Du and Dominik Hezel

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
2:30 p.m.	Luu T.-H. * Hin R. C. Coath C. D. Elliott T.	Bulk Chondrite Variability in Mass-Independent Magnesium Isotope Composition — Implications for Initial Solar System ^26Al/^27Al [#6131] Bulk ordinary and carbonaceous chondrites (except CRs) define an array on an Al-Mg isochron diagram, whose (^26Al/^27Al)0 slope is within uncertainty of the canonical value defined by bulk CAIs.
2:45 p.m.	Vacher L. G. * Ogliore R. C. Liu N. Lewis J. B.	NanoSIMS O and S-Isotope Analyses of Cosmic Symplectite in the Primitive Chondrite Acfer 094 [#6468] Cosmic symplectite (COS) are anomalous ^17,18O-rich phases that carry O-isotopic mass-independent fractionation (MIF).However, no S-analyses were previously reported for COS while they might also display, like for O isotopes, MIF for S isotopes.
3:00 p.m.	Hezel D. C. * Harak M.	Using the ChondriteDB Database to Study Chondrule — Matrix Complementarities [#6316] Chondrule-matrix complementarity can decide whether these two components formed from a single reservoir or were mixed from various reservoirs. Complementarities of Mg/Si vary among CV chondrites. This supports a formation from a single reservoir.
3:15 p.m.	Le Guillou C. * Zanetta P-M. Leroux H. Brearley A. J. Zanda B. Hewins R.	Amorphous Silicates in Carbonaceous and Ordinary Chondrites [#6267] Amorphous silicate is a major component of matrix in pristine carbonaceous and ordinary chondrites. Systematic TEM hyperspectral data analysis allows to discuss its origin and secondary parent body evolution.
3:30 p.m.	Florin G. * Luais B. Rushmer T. Alard O.	Bencubbinite Formation: The Turbulent Life of Metal as Inferred from Germanium Isotopes [#6313] The formation of CB chondrites has been described as being related to impact plume condensation. In this study, we propose isotopic investigation of Ge in CB bulk metal and metal grains in order to identify condensation processes at low temperature.
3:45 p.m.	Reger P. M. * Simon S. B. Gannoun A. M. Gibson J. M. Gannoun R. C. Bouvier A.	Petrology, Geochemistry and Pb-Pb Age of a Large Igneous Inclusion from the Ordinary Chondrite Paposo 004 [#6365] We report the petrology, geochemistry, O isotopic composition and Pb-Pb whole-rock age of a large igneous inclusion found in the L3.1 ordinary chondrite Paposo 004 and conclude that it formed as a product of impact melting.
4:00 p.m.	Alpert S. P. * Ebel D. S. Weisberg M. K. Kita N. T. Siron G. Fukuda K.	The Petrology of Opaque Assemblages in Unequilibrated Ordinary Chondrites [#6103] A detailed petrologic study of the opaque assemblages in Semarkona including oxygen isotope data. OAs exhibit a wide range of mineralogy and structure which may indicate formation from multiple sources.
4:15 p.m.	Kita N. T. * Siron G. Kimura M.	Petrographic Examination of Unequilibrated Ordinary Chondrites with Low Petrologic Subtypes [#6237] To search pristine chondrules suitable for Al-Mg chronology, we examined metal phases and petrology of chondrules in six North West Africa and Antarctic ≤3.05 UOCs. They are only slightly more metamorphosed (3.05–3.10) than Semarkona (LL3.01).
4:30 p.m.	Park J. * Weisberg M. K. Nagao K. Herzog G. F. Nyquist L. E. Ebel D. S. Okazaki R. Choi J. Baek J. M. Park C. Lee M. J. Lee J. I.	Noble Gas Studies on Northwest Africa (NWA) 8785 EL3 and NWA 8789 EH3 Chondrites [#6259] We present noble gas analyses of the recent finds Northwest Africa (NWA) 8785 (EL3) and 8789 (EH3).
4:45 p.m.	Debaille V. * Armytage R. M. G. Wainwright A. N. Pourkhorsandi H. Hublet G.	Comparing Neodymium Nucleosynthetic Anomalies in Ordinary and Enstatite Chondrites [#6132] We will investigate the nucleosynthetic anomalies of Nd to understand the average composition of the Earth.
5:00 p.m.	Du W. * Ohfuji H. Irifune T.	Melting of Sahara 97072 Meteorite at High Pressure and High Temperatures [#6185] Melting experiments on the Sahara 97072 (EH3) meteorite at 5 GPa and 1000–1700°C show that: (1) the meteorite is completely melted at 1600°C;(2) Overheating the meteorite sample to 1650 and 1700°C causes (Fe, Ni)-alloy exsolved from (Fe, Ni)-sulfide.
5:15 p.m.	Irving A. J. * Kuehner S. M. Carpenter P. K. Ziegler K. Sipiera P. P.	Deep Thermal Metamorphism (Not Melting) of Ordinary and Carbonaceous Chondrite Precursors Produced Type 7 and Proposed Type 8 Chondrites [#6399] We propose expanded terminology for high grade thermally metamorphosed ordinary and carbonaceous chondrites.

Tuesday, July 9, 2019

METEORITE EXPOSURE HISTORIES, DELIVERY, AND RECOVERY

2:30 p.m. Small Auditorium

Chairs: Mutsumi Komatsu and Natasha Stephen

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
2:30 p.m.	Hidaka H. * Nishiizumi K. Caffee M. Yoneda S.	Samarium Isotopic Compositions of Lunar Meteorites [#6279] Cosmic-ray exposure records for seven lunar meteorites were characterized from the systematic data set given by cosmogenic nu-clides and neutron-captured isotopic shifts of ^149Sm-^150Sm.
2:45 p.m.	Choi J. * Nagao K. Park J. Baek J. M. Lee J. I. Ebel D. S. Weisberg M. K.	In-Situ Noble Gas Analysis of Mount DeWitt 12007 Lunar Meteorite [#6281] We report the results of noble gas analyses of DEW 12007 lunar meteorite by a laser heating method.
3:00 p.m.	Ranjith P. M. * He H. Smith T. M. Su F. Lin Y. Zhu R.	Noble Gas Components in the Lunar Meteorite Northwest Africa 10203 [#6175] We will present noble gas data from a Lunar meteorite NWA 10203, which is a regolith breccia. Trapped gases release at high-T steps where as cosmogenic gases at low-T steps. We have estimated trapped solar-Ne composition and cosmic ray exposure age.
3:15 p.m.	Miura Y. * Kato T.	Quenched Indicator of Carbon-Bearing Solids Found in the Nio Meteorite [#6240] Quenched formations of carbon-bearing solids are discussed on any FeC-bearing fusion crust and MgC-bearing chondrules of the Nio meteorit shower. Quenched indicator of carbon-bearing grains can be applied to meteorite collisions and its shower.
3:30 p.m.	Fries M. * Waddell J. OET and crew of E/V Nautilus SOI and crew of R/V Falkor Pugel B. Zeigler R. Harvey R. Welzenbach L. McCubbin F. Abell P.	Recovering the 07 Mar 2019 Meteorite Fall into the Olympic Coast National Marine Sanctuary [#6483] Weather radar data indicates that this meteorite fall is unusually mechanically tough. Recovery of at least one meteorite is needed to find out why. Recovery efforts by the research vessels E/V Nautilus (OET) and R/V Falkor (SOI) are described.
3:45 p.m.	Caplan C. E. * Huss G. R. Nagashima K. Schmitz B.	Meteorites of the Jurassic: Populations Determined from Remnant Extraterrestrial Chrome-Spinels in Spanish Limestone [#6050] Jurassic meteorite populations are investigated using O-isotopes and element abundances of chrome-spinels from highly condensed sediments.
4:00 p.m.	Sliz M. U. * Braucher R. Espic C. Gattacceca J. Hofmann B. A. Leya I. Szidat S. ASTER Team	Terrestrial Ages of the Shisr 015 Meteorite Strewn Field from the Sultanate of Oman, Determined Using Measured In Situ C-14 and Be-10 [#6287] We present C-14/Be-10 terrestrial ages of the meteorite strewn field Shisr 015 from the Sultanate of Oman, determined with C-14 data obtained at radiocarbon extraction line at the Univ. of Bern, and Be-10 obtained at the ASTER AMS facility (France).
4:15 p.m.	Mikouchi T. * Yamaguchi A. Shirai N. Isa J. Komatsu M. Kawakami S. Katsuta N. Kawamata T. Sugiyama K.	Nagara: A New Japanese IAB Iron Meteorite Find [#6141] Nagara is the newest Japanese iron (approved in 2018). 2 samples have been recovered (6.5 and 9.7 kg) and their geochemistry shows Nagara is IAB-MG. Nagara is composed of ~1 cm granular kamacite with rare silicates and similar to Campo del Cielo.
4:30 p.m.	Chennaoui Aoudjehane H. * Agee C. B.	Ksar El Goraane (H5): The Latest Moroccan Meteorite Fall on 2018 [#6297] On Octobre 28th around 22:30 (GMT+1) a fireball was detected by many people in the east of Morocco around 80 northeast of Erfoud. The fall site is around the small Ksar El Goraane village. First pieces was collected one day after. It’s an H5 OC.
4:45 p.m.	Di Gregorio M. Busemann H. * Hunt A. C. Krietsch D. Schönbächler M. Maden C.	Variable Cosmogenic Argon in L/LL5 Chondrite Knyahinya [#6384] Large variations in cosmogenic ^38Ar that correlate with Ca concentrations in 20 mg aliquots of L/LL5 Knyahinya suggest that in this mass range ^38Ar exposure ages can be off by almost a factor of 2, if Ar and Ca are measured in different aliquots.
5:00 p.m.	Smith T. M. * Li S. Ranjith P. M. Su F. Gattacceca J. ASTER Team He H.	Cosmic-Ray Exposure Age and Preatmospheric Size of three Recent Falls (L6) [#6155] We report here the cosmic-ray exposure ages and preatmospheric sizes of three recent L6 chondrites falls. We expect these meteorites to have a similar exposure history and therefore to be paired.

Tuesday, July 9, 2019

DIFFERENTIATED METEORITES II: FROM PRIMITIVE ACHONDRITES TO IRONS

2:30 p.m. Conference Room 1

Chairs: Steven J. Desch and Chi Ma

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
2:30 p.m.	Aléon J. * Aléon-Toppani A. Platevoet B. Bardintzeff J. M. McKeegan K. D. Brisset F.	Onset of Magmatism on a Carbonaceous Chondrite Planetesimal [#6047] The petrology and isotopic composition of trachybasaltic clast UH154-11 from the CR chondrite El Djouf 001 are consistent with partial melting and melt extraction in the CV chondrite planetesimal.
2:45 p.m.	Hu S. * Anand M. Franchi I. A. Zhao X. Chan Q. H. S. Zhang B. Bouvier A. Lin Y. T. Zhang J. C. Hao J. L. Yang W. Liu Y. Tang G. Q. Li Q. L. Agee C.	U-Pb Dating, Hydrogen and Chlorine Isotopic Systematics of the Whitlockite and Apatite from the Ungrouped Achondrite Northwest Africa 11119 [#6099] U-Pb dating, hydrogen and chlorine isotopes, and volatile concentration of the first natural whitlockite from ungrouped achondrite NWA 11119 were measured to constrain the nature of the most evolved volcanism in the early solar system.
3:00 p.m.	Yasutake M. * Yamaguchi A. Greenwood R. C. Hibiya Y. Iizuka T. Franchi I. A.	Olivine Chemical Features and O-Cr-Ti Isotopic Compositions of Northwest Africa 7312 Unique Differentiated Meteorite: Comparing to Other Meteorite Groups [#6090] We investigated olivine minor elements composition and O-Cr-Ti isotope compositions of NWA 7312. We conclude that NWA 7312 is derived from an unknown differentiated asteroid that experienced extensive melting and ductile solid-state deformation.
3:15 p.m.	Vaci Z. * Agee C. B. Ziegler K.	Dunite Breccias Northwest Africa 12217, 12562: Possible Planetesimal Mantles [#6459] Northwest Africa 12217 and 12562 are petrologically and geochemically distinct dunite breccias that are likely sourced from a unique parent body. They might represent a cumulate pile originating from the mantle of a differentiated planetesimal.
3:30 p.m.	Desch S. J. * O’Rourke J. G. Schaefer L. K. Sharp T. G. Schrader D. L.	Ureilites: Mixes of a Vesta-Like Parent Body and an Impactor from Proto-Mars [#6203] We hypothesize that ureilite silicates, metal and carbon represent mixes of two end-members: a Vesta-like parent body that underwent smelting; and an impactor derived from proto-Mars’s mantle.
3:45 p.m.	Zhu K. * Moynier F. Schiller M. Wielandt D. Larsen K. K. van Kooten E. M. M. E. Bizzarro M.	Chromium Isotopic Constraints on the Origin the Ureilite Parent Body [#6323] Ureilite parent body shows a mantle heterogeneity of Cr isotopes, and the monomict ureilites were melted at 4567.1 ± 1.0 Ma dated by Mn-Cr dating. The correlated ε^53Cr and ε^54Cr suggest this old age reflects the formation of ureilite planetesimals.
4:00 p.m.	Wilbur Z. E. * Udry A. McCubbin F. M. Vander Kaaden K. E. Zeigler R. A. Ziegler K. DeFelice C.	Investigating the History of Aubrites Using X-Ray Computed Tomography and Bulk Partition Coefficients [#6180] We scan a partial suite of aubrites using XCT to provide a 3D view of aubritic mineralogies, and calculate aubrite bulk distribution coefficients, which we compare to petrologic experiments run under mercurian conditions.
4:15 p.m.	Ray S. * Wadhwa M. Rai V. K. Garvie L. A. J.	Iron Isotope Compositions of Si-Bearing Metal Nodules from the Mount Egerton Aubrite [#6427] This work discusses the origin of metal nodules in the Mount Egerton aubrite based on their elemental and iron isotope composition. Our data suggest partial equilibration of metal in aubrites under existing oxygen fugacity conditions.
4:30 p.m.	Khan H. * Leya I.	A Re-Investigation of 41K-K Cosmic Ray Exposure Ages for Iron Meteorites [#6293] Opening up the investigation into Potassium Dating of Iron Meteorites from a very different a unique angle.
4:45 p.m.	Ma C. * Rubin A.	Edscottite, Fe5C2, a New Iron Carbide Mineral from the Wedderburn Iron Meteorite [#6395] Edscottite is Hägg-carbide, Χ-Fe5C2, a new iron carbide mineral, joining cohenite (Fe3C) and haxonite ((Fe,Ni)23C6), formed metastably in kamacite in Wedderburn during cooling from high temperature.
5:00 p.m.	Chabot N. L. *	Revised Trapped Melt Model for Iron Meteorites [#6025] A revised trapped melt model matches the IIIAB iron meteorite elemental trends while also using experimentally determined partitioning values. Everyone is happy!
5:15 p.m.	Litasov K. D. * Teplyakova S. N. Shatskiy A. Kuper K. E.	Fe-Ni-P-S Melt Pockets in Elga IIE Iron Meteorite: Evidence for the Origin at High Pressures up to 20 Gpa [#6053] We report new evidence for high-pressure microstructures in Elga IIE iron meteorite, made of Fe-Ni-P-S melt microcrystalline aggregates. Their compositions correspond to the Fe3P-Fe3S solid solution with the closure of an immiscibility gap at 20 GPa.

Tuesday, July 9, 2019

POSTER SESSION: CHONDRULES!

5:30 p.m. Poster Room

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Authors (*Denotes Presenter)	Abstract Title and Summary
Sukhanova K. G. Skublov S. G. Galankina O. L. Obolonskaya E. V. Kotova E. L.	Geochemical and Mineralogical Features of Chondrule and Matrix Olivine from the Buschhof Ordinary Chondrite [#6165] In this research we are measured major and trace elements contents in olivine for understanding formation differences between chondrule and matrix in ordinary chondrites.
Bakhtin A. I. Sungatullin R. Kh. Gusev A. V. Eskin A. A. Kuzina D. M.	Superimposed Processes in Chondrules of the Ochansk Meteorite [#6199] We present investigations of Ochansk meteorite by set of methods for study formation history of meteorite.
Abe K. Greenwood J. P. Herbst W.	Textures and Chemical Compositions of Experimental Chondrule Synthesis by a Radiative Heating Model [#6476] We performed experimental chondrule synthesis by a radiative heating model to compare synthesized chondrules and natural Type I chondrules. The synthesized chondrules have affinity with Semarkona Type I chondrules in texture and chemical composition.
Varela M. E.	Silica-Rich Objects in Acfer 182: A New View [#6170] I report the results of major and trace element studies of some silica-rich objects (SRO) in Acfer 182 and compared them with previous studies of SRO, Mg-rich cryptocrystalline (CC) and radiating pyroxene (RP) chondrules in CH chondrites.
Goudy S. P. Ruzicka A. M.	Relations Between Accretional Deformation and Temperature in Cluster Chondrite Chondrules [#6105] We analyze cluster chondrite chondrules with EBSD methods to test for correlations between metrics of chondrule deformation, olivine deformation, and deformational temperature. It is found that chondrule and olivine deformation are strongly related.

Tuesday, July 9, 2019

POSTER SESSION: DIFFERENTIATED METEORITES I: MOSTLY HEDS

5:30 p.m. Poster Room

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Authors (*Denotes Presenter)	Abstract Title and Summary
Mayne R. G. Funderburg R. L. Lunning N. G.	Reevaluating the Unbrecciated Eucrites for Evidence of Metasomatism [#6196] Old eucrite data: / See metasomatism / Not discussed before.
Anderkin C.	Silica Rich Vestan Crustal Terranes? Intermediate Compositions Revealed by an Inhomogeneous Impact Spherule in Northwest Africa 12231 [#6156] Are the enrichments of silica and alkalis here indicative of felsic Vestan crust, impact-induced oxide fractionation, or something else? Let’s find out.
Roszjar J.	Secondary Alteration of the Serra Pelada Eucrite [#6311] This study focuses on the petrology of accessorry phases in the Serra Pelada eucrite fall to characterize alteration processes.
Liao S. Y. Hsu W. B.	U-Pb Zircon and Apatite Chronology of a Quartz-Rich Basaltic Eucrite and Constraint on Thermal History of the Vestan Crust [#6234] In this work, we carried out in-situ U-Pb isotopic study on the basis of detailed petrographic studies of NWA 6594, an unbrecciated basaltic eucrite, with the purpose to obtain precise chronological constraints with a petrological context.
Slotte N. Debaille V. Wainwright A. N. Goderis S. Luguet A.	Early Core Formation of the Asteroid Vesta Revealed by HSE Concentrations in Eucrites [#6151] We analyzed five unbrecciated eucrites for their HSE systematics. We suggest that the discrepancies in HSE depletion reflect the progressive decrease of core segregation intensity in favor of a dominant intake of HSE by chondritic accretion.
Chen H. Y. Pro. Miao B. K. Xie L. F.	Petrogensis of HED Meteorites and Implications for Magmatic Evolution of Parent Body [#6058] Based on the structure and texture of rocks, major and trace elements geochemical characteristics, some significant achievements regarding to the HED clan of meteorites petrogenesis, implication of magmatic evolution and thermal metamorphism.
Szurgot M. Wach R. A. Unsalan O. Altunayar-Unsalan C.	Mean Atomic Weight and Thermophysical Properties of Sariçiçek Howardite [#6011] Mean atomic weight of Sariçiçek meteorite was determined and compared with other HED achondrites and Vesta. Classification of Sariçiçek as an eucrite-rich howardite was confirmed, and specific heat, thermal conductivity and diffusivity predicted.
Ushikubo T. Shimizu K.	Development for In-Situ Volatile Element Abundances, and Hydrogen and Sulfur 2-Isotope Analyses of Silicate Glasses by SIMS [#6092] In-situ SIMS analysis techniques have capability to measure volatile element abundances, and hydrogen and sulfur isotope ratios of melt inclusions as small as 30 micrometer in size.

Tuesday, July 9, 2019

POSTER SESSION: DIFFERENTIATED METEORITES II: FROM PRIMITIVE ACHONDRITES TO IRONS

5:30 p.m. Poster Room

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Authors (*Denotes Presenter)	Abstract Title and Summary
Hidaka Y. Haba M. K. Shirai N. Yamaguchi A. Debaille V.	In-Situ Chemical Analyses of Winonaite Metals: Implications for the Origin of IAB Non-Magmatic Iron Meteorites [#6128] Genetic relationships between winonaites and IAB irons, and the origins of IAB iron subgroups are revealed by model calculation of metallic partial melting.
Pastukhovich A. Iu. Berzin S. V. Dugushkina K. A. Grokhovsky V. I. Chervyakovskaya M. V.	New Unique Branchinite-Like Achondrite Calama 029 [#6148] The abstract describes the result of a study of the Calama 029 meteorite, a unique achondrite that has no analogues among known meteorites. Assumptions about the mechanisms of formation and the parent body of the Calama 029 meteorite are made.
Miura Y. N. Okazaki R.	Noble Gases in a Primitive Achondrite Northwest Africa 3250 [#6344] NWA 3250 is a primitive achondrite. The oxygen isotope composition plots on the bulk CR chondrite field and is close to those of some primitive achondrites. In this study, we conducted noble gas analyses for two small fragments of the meteorite.
Bischoff A. Lentfort S. Moehlmann K. Klemm K. Haberer S.	Mineralogical Characteristics of 20 New Samples from the Almahata Sitta Strewnfield [#6030] After asteroid 2008 TC3 impacted Earth in 2008, many different meteorite types were identified among the numerous meteorite fragments. Here, the mineralogical characteristics of 20 new samples (15 ureilites and 5 enstatite chondrites) are presented.
Broadley M. W. Bekaert D. V. Marty B. Yamaguchi A. Barrat J. A.	Noble Gas Variations in Ureilites Demonstrate Heterogenous Volatile Distribution in the Early Solar System [#6469] Ureilites represent the remnants of the mantle from a single, inner solar system body. The analysis of noble gases in ureilites therefore represents a unique opportunity to probe how planetary bodies acquire volatiles during accretion .
Goodrich C. A. Desch S. J.	Exogenous Metal in Ureilites [#6094] Metal in ureilites is a mixture of an indigenous, highly-fractionated residue from high degrees of melting in Fe-FeS, plus exogenous chondritic metal added from the impactor during catastrophic disruption of the ureilite parent body.
Sugiura N. Arai T. Matsui T.	Northwest Africa 4747, an Unique Mesosiderite [#6083] Petrographic features of the NWA 4747 mesosiderite are described and its history is discussed.
Wang Y. Mei A. Hsu W.	Petrology and Mineralogy of the Northwest Africa 11005 Mesosiderite [#6377] Preliminary results of petrologic and mineralogical studies of the NWA 11005 mesosiderite are presented.
Wang Y. Hsu W.	Petrology and In Situ Geochronology of the Youxi Mesosiderite [#6181] We carried out petrologic, mineralogic, and geochronological studies of the Youxi mesosiderite. The Pb/Pb age obtained for merrillites is 3950 ± 80 Ma, which represents the time of metal-silicate mixing that had produced the Youxi mesosiderite.
Koyama Y. Sano Y. Takahata N. Koike M. Haba M. K.	Hf-W and U-Pb Dating and REE and Ti Anaylysis of Zircons Extracted from Mesosiderites [#6302] In this study, we conducted U-Pb and Hf-W dating and measured REE and Ti concentration in zircons from the same mesosierites in order to discuss origin and evolution of these zircons by using NanoSIMS 50 at AORI,the University of Tokyo.
Grokhovsky V. I. Gladkovsky S. V.	Brittle Fracture Resistance of Chinga and Seymchan Meteorites Under Static and Impact Loading [#6429] A comparative evaluation of Chinga and Seymchan iron meteorites brittle fracture resistance by means of static fracture toughness and impact strength tests is presented.
Brusnitsyna E. V. Muftakhetdinova R. F. Yakovlev G. A. Grokhovsky V. I.	The Octahedrite and Pallasite Part Metallographic Comparison of the Seymchan Meteorite [#6481] In this work, various metallographic parameters of fragments from the octahedrite and pallasite parts of the Seymchan Meteorite were investigated.
DellaGiustina D. N. Domanik K. Hill D. H. Habib N. Lauretta D. S.	Olivine Inclusions in the Fukang Pallasite and Implications for the Main-Group Parent Body [#6398] We report on a variety of silicate inclusions enclosed in olivine in the main-group pallasite Fukang. These inclusions contain phases rarely or not previously reported in Main-group pallasites and have implications for the formation of Fukang.
Begunova A. S. Kamalov R. V. Yakovlev G. A. Grokhovsky V. I.	Influence of Meteorite Structure on Nanotubes and Nanocrystals Synthesis [#6406] This work is devoted to the synthesis of organized nanostructures using chemical vapor deposition on meteoritic substrate. The meteorite structural composition influence on morphology of nanostructures was discussed.
Litasov K. D. Sano Y. Takahata N. Miki T. Teplyakova S. N. Skripnik A. Y.	U-Pb and Pb-Pb Dating of the Apatite from IAB Iron Meteorites [#6125] We provide additional evidence for early formation of silicate-bearing IAB irons based on U-Pb dating of apatite from silicate-bearing inclusions. The obtained data for all meteorites quite densely fall on the isochronous age 4563 ± 29 Ma.
Li S.-L. Hsu W.-B.	Mineralogy and In Situ Pb–Pb Dating of Silicate Inclusions in Miles (IIE) [#6265] The Miles IIE iron contains several U-bearing phases with different occurrences. In-situ Pb–Pb dating of these phases were performed in this study for better understanding of the complex thermal history experienced by the IIE parent body.
Wang G. Q. Lin Y. T.	Huoyanshan Iron Meteorite: Bulk Chamical Composition and Classification [#6009] The first piece of iron meteorite Huoyanshan was found on Oct. 6, 2016 at 15 km NE of the Mountain Huoyanshan. It is an typical IAB-sLH iron, and it is significant to provid more information on research of IAB-sLH.
Sharygin V. V.	Sodium-Rich Phosphate and Silicate Inclusions in Troilite Nodule in Darinskoe Iron Meteorite (IIC) [#6301] Phosphate and silicate inclusions was found in troilite nodule of the Darinskoe iron meteorite. Decription and chemical composition of individual phases (buchvaldite, Cl-free djerfisherite, unusual Na-Ti-rich silicate glass) of inclusions are given.
Badekha K. A. Grokhovsky V. I. dr. Yakovlev G. A.	The Influence of Inclusions on the Formation of Metal Structure in the Ataxites [#6403] Seven iron meteorites were studied to reveal microstructural features near the inclusions. Spesial structure is formed in Hoba and Gebel Kamil ataxites. Small inclusions of schreibersite were revealed by EBSD and EDS methods.
Faivovich G. Goldberg N.	Campo del Cielo: Identification of a Fragment from the Long Lost Meson de Fierro at Naturhistorisches Museum Wien [#6397] A 19-gram fragment of the long lost Mesón de Fierro meteorite, from Campo del Cielo, has possibly been identified at the Natural History Museum Vienna.

Tuesday, July 9, 2019

POSTER SESSION: DYNAMICAL EVOLUTION AND PROCESSES IN THE SOLAR NEBULA

5:30 p.m. Poster Room

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Authors (*Denotes Presenter)	Abstract Title and Summary
Kobayashi K. Yamamoto D. Tachibana S.	Structure and Crystallization of Amorphous Enstatite Synthesized by Induced Thermal Plasma and Sol-Gel Method [#6236] Structure analysis and crystallization experiments of amorphous enstatite synthesized by different methods show that silicate network structure would affect the crystallization behavior of amorphous silicate dust in protoplanetary disks.
Ipatov S. I.	Accumulation of Planetesimals by Forming Terrestrial Planets from Different Regions of Their Feeding Zone [#6147] Migration of planetesimals to forming terrestrial planets is considered. The outer layers of the Earth and Venus could accumulate the same material for these two planets from different parts of the feeding zone of the terrestrial planets.
Ipatov S. I.	Probabilities of Collisions with the Earth and the Moon of Planetesimals Migrated from Outside the Orbit of Mars [#6290] We studied the probabilities of collisions with the Earth and the Moon of planetesimals migrated from initial distances from 2.5 to 40 AU from the Sun.
Perov N. I. Pakhomycheva V. E.	On the Problem of Galactic Dust Discovering [#6003] Decreasing of the velocities of the small sizes interstellar meteoroids in the internal part of the solar system is under consideration. Gravitational force of the Sun, light pressure and the effect of Pointing-Robertson are taken into account.
Kochemasov G. G.	Centimeter Size Crossing Ripples both on the Near and Far Sides of the Moon (Chang’E 3 and 4): Modulation of the Moon’s Orbit by the Galactic Rotation [#6036] Any celestial body moves in several orbits in Cosmos. These orbits must interact. The lower freqoencies modulate the higher ones producing side frequencies. They correspond structures. On the Moon due to Chang’E 3 and 4 one observes very fine rippling.

Tuesday, July 9, 2019

POSTER SESSION: IMPACTS HERE, THERE, AND EVERYWHERE

5:30 p.m. Poster Room

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Authors (*Denotes Presenter)	Abstract Title and Summary
Ucar H. Kletetschka G.	Relationship Between the Matuyama-Brunhes Reversal and Indochinites [#6008] Several studies showed that Australasian tektite fall could change magneto-hydrodynamic motions of the Earth’s core. In this study, the relationship between Matuyama-Brunhes magnetic reversal and indochinites is discussed.
Kassab F. Ferrière L. Belhai D.	Tin Bider Impact Structure (Algeria): Shock Metamorphism in Albian Sandstones. [#6017] Tin Bider impact structure is the largest complex impact crater known in Algeria characterized by a central uplift where sandstones are exposed. We report here on petrographic investigations shock metamorphic features in quartz grains such as PDF.
Hamai L. Lamali A. Yelles-Chaouche A. Abtout A. Nadjemi A. Merabet N. Bentridi S. Djadia L.	The Use of Georadar to Explore the Impact Ejecta Layer Around the Maâdna Structure (Talemzane, Algeria) [#6020] Georadar to Explore the Impact Ejecta Layer around the Maâdna Structure (Talemzane, Algeria).
Lamali A. Hamai L. Mokhtar S. A. Yelles-Chaouche A. Abtout A. Merabet N. Bentridi S. Djadia L. Nadjemi A.	A Contribution of Gamma Ray Spectrometric Data in Understanding the Structure of the Maâdna Crater (Talemzane, Algeria) [#6019] Gamma Ray Spectrometric Data in Understanding the Structure of the Maâdna Crater (Talemzane, Algeria).
Yin F. Chen M. Sharp T.	A TEM Investigation of Formation Process of Coesite from the Xiuyan Impact Crater [#6066] We study the crystallization process of two occurrences of coesite that embedded in the silica glass from the Xiuyan impact crater, China.
Plan A. Lindgren P. Lambert P.	A Survey of Zircon Microtextures in the Rochechouart Impactites [#6140] An ongoing project of Zircon microtextures in the Rochechouart impactites. Including SEM-BSE and at a later stage SEM-EBSD studies on zircon separates and zircons in thinsections.
Muravyev L. A.	Global Datasets of the Geophysical Fields as an Instrument for Impact Structures Discovery [#6462] The remote sensing of the Earth is one of the most perspective methods for detecting new impact structures. We analyzed how the 20 largest confirmed impact structures reflects in modern global databases of magnetic, gravitational fields and relief.
Mardon A. A. Zhou G.	Asteroid Impact ALert System [#6498] The Asteroid Terrestrial-Impact Last Alert System (ATLAS) is a NASA-funded robotic survey and acts as an early warning system for asteroid impacts to Earth.
Strait M. M. Flynn G. J. Durda D. D. Molesky M. J. May B. A. Congram S. N. Loftus C. L. Reagan J. R.	Appearance of the Impact Flash in Meteorite Disruption Experiments [#6455] An evaluation of the impact flash character during disruption experiments with meteorites and terrestrial analogs.
Leong P. K. Tang C. P. Tam S. I. Sekine T.	A DFT Study of the Structure and Properties of Nitrogen Doping Spinel MgAl2O3.5N0.5 [#6299] We use DFT calculation to study a possible nitrogen-doped spinel, including its structure and electronic properties. we also compare the stability of this spinel and the prefect spinel at high pressure.
Bender Koch C. Kasama T.	Telluric Iron from Wabar Impactite [#6439] We have analyzed magnetic sand sized grains from Wabar impactites. The elemantal analyses indicates that metallic iron has been formed. Most likely the iron originate from titano-magnetite occuring in the local drift sand (impact target).
Pittarello L. Fritz J. Roszjar J. Lenz C. Chanmuang N. C. Koeberl C.	Comparison of Different Spectroscopic Techniques in Investigating Shocked Plagioclase [#6277] Micro-Raman spectroscopy, photoluminescence, and cathodoluminescence revealed useful in characterizing the amorphization degree of experimentally shocked plagioclase.
Shirai N. Ebihara M.	Siderophile Element Fractionation in Impact Glass from the Wabar Impact Crater [#6284] Impact glass from the Wabar impact crater was analyzed by using INAA, IPAA and ICP-MS. Based on the analytical results, we discussed elemental fractionation during impact event.
Silber E. A. Moreno-Ibáñez M. Gritsevich M. Trigo-Rodríguez J. M. Silber R. E.	Evaluating Fidelity of Empirical Energy Relations for Determining Bolide Energy Deposition and Implications for Impact Hazard [#6440] We use well-documented and well-characterized published bolide records, and apply various energy relations developed over the years to compare and evaluate the outcomes, and establish the implications for impact hazard.
Silber E. A. Gritsevich M.	Analysis of the Infrasound Data Associated with the Annama Fireball (19 April 2014) [#6470] We study the infrasound data associated with the Annama, a meteorite-producing fireball observed (and later recovered) by the Finnish Fireball Network on April 19, 2014.
Schmieder M. Erickson T. M. Rahman Z. Keller L. P. Kring D. A. IODP-ICDP Expedition 364 Science Party	Outstanding Natural Occurrence of TiO2–II at the Chicxulub Crater — Anatomy of a Shock-Produced High-Pressure Polymorph [#6320] We present refined microstructural and new crystallographic results for the high-pressure polymorph TiO2–II in shocked peak-ring lithologies from the Chicxulub crater.
Flynn G. J. Durda D. D. Molesky M. J. May B. A. Congram S. N. Loftus C. L. Reagan J. R. Strait M. M. Macke R. J.	Hypervelocity Impact of CI1 and CM1 Meteorite Analogs: Implications for the Survival of Orgueil-Like Bodies in Space [#6324] We found the susceptibility to catastrophic disruption of CI1/CM1 simulant in hypervelocity impact to be much greater than that of the Northwest Africa 869 ordinary chondrite, likely explaining the short space exposure ages of CI and CM meteorites.
Schmidt G.	Re-Investigation of Specific Impactor Compositions from Terrestrial Impact Craters by the Diagnostic Element Ratios Ru/Rh and Ir/Rh [#6026] Diagnostic element ratios for specific impactor compositions are Ir/Rh, Ru/Rh and Os/Ir. High quality data of Rh, Ir and Ru from iron meteorites might contribute to our understanding of projectile types involved in the formation of planetary bodies.
Arefiev A. V. Litasov K. D. Shatskiy A. Greaux S. Irifune T.	Experimental Evidence for High-Pressure Transformation of Merrillite and Na-Bearing Phosphates [#6126] We provide data on the synthesis of merrillite and other Na-phosphates at 15–20 GPa and show their relevance to high-pressure phosphates in meteorites. Merrillite transforms into tuite-like structure, whereas brianite remains untransformed to 20 GPa.
Miyahara M. Kozuma K. Ohtani E. Yamaguchi A. Sakai T. Ohfuji H. Tomioka N. Kodama Y.	Shock-Induced Melting and High-Pressure Polymorphs in Lunar Basaltic Meteorites [#6014] We conducted a systematic investigation about the shock-induced melting and high-pressure polymorphs in the lunar mare basaltic samples and revealed that most lunar mare basalts have experienced a heavy meteoroids impact.
Nakamura A. M. Ogawa K. Murakami Y. Yamasaki Y. Nagaashi Y. Nomura K. Kadono T. Suetsugu R. Kawai N. Tanaka S. Okamoto T.	Explosive Crater Experiments of Porous Gypsum Targets [#6349] Explosive crater experiments were conducted using porous gypsum targets to investigate the similarity between the results of explosive and impact events for porous targets.
Christou E. V. Bach W.	Post-Impact Habitability at the Chicxulub Crater [#6100] We assess the habitability at the Chicxulub crater during the period of impact-induced hydrothermal activity. Assuming that H2 is the main energy source for supporting subterranean life, the H2 release and availability in Chicxulub are estimated.

Tuesday, July 9, 2019

POSTER SESSION: METEORITE EXPOSURE HISTORIES, DELIVERY, AND RECOVERY

5:30 p.m. Poster Room

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Authors (*Denotes Presenter)	Abstract Title and Summary
Mardon A. A. Zhou G.	Asteroid Mining and In-situ Mineral Resource Utilization [#6189] Although this investigatory tool can be used on a broad basis including under asteroid conditions, current technology is still being developed to bring down the massive initial capital costs down for asteroid mining to becoming a reality.
Nolau J. O. Swindle T. D. Campins H. Connolly H. C. Jr.	How Unique is Almahata Sitta and How Relevant is it to Bennu? [#6387] With the albedo diversity and size range of surface features observed on Bennu, and similar albedo diversity present among meteorites like Almahata Sitta and Kaidun, how uncommon it is to observe meteoritic falls that contain different lithologies?
Obase T. Nakashima D.	Past Solar Wind Fluxes at the Locations of Gas-Rich Meteorite Parent Bodies Based on Noble Gas Studies: Implications to the Past Heliocentric Distances [#6270] We estimated past solar wind ^36Ar fluxes on the parent bodies of seven gas-rich meteorites. The past heliocentric distances of the parent bodies are (re)calculated by comparing with the solar wind ^36Ar flux at 1 AU obtained by the Genesis mission.
Povinec P. P. Sykora I. Jull A. J. T. Kornos L. Macke R. J. Porubcan V. Toth J.	Aluminium-26 in Martian and Lunar Meteorites: A Comparison of Cosmic-Ray Exposure Ages [#6309] We present ^26Al exposure-age studies on martian and lunar meteorites.
Gattacceca J. Bonal L. Montagnac G.	Meteorite Heating During Atmospheric Entry [#6374] We quantify the penetration of the heat wave generated in a meteorite during atmospheric entry.
Ostrowski D. R. Haskins J. B.	Thermal Emissivities Relationship to Meteor Ablation [#6268] Emissivities relationship to the time it takes for the surface of a meteor to reach melt conditions and how that affects the ablation rate. Emissivities values up to reentry temperature are studied on how it affects a meteors surface temperature.
McMullan S. Daly L. Collins G. S. Bland P. Desert Fireball Network Team	The UK Fireball Network: Stage Two of the Global Fireball Observatory [#6359] Installation of autonomous cameras across the UK as part of a larger effort by the Desert Fireball Network in Australia. They continually monitor the night sky to capture fireball events. Let’s recover the first meteorite in the UK for 30 years!
Muravyev L. A. Grokhovsky V. I.	The Chrono List of Bad Meteorites [#6454] We have systematized the official information about the damage to property or human health by meteorites, in order to assess whether this threat is significant to humanity.
Pastukhovich A. Iu. Demberel S. Grokhovsky V. I. Kolunin R. N. Larionov M. Y. Muravyev L. A. Nasan-Ochir T. Petrova E. V. Yakovlev G. A.	Russian-Mongolian Meteorite Expidition to the Gobi Desert [#6142] The article describes the results of the work of the Russian-Mongolian meteorite expedition in the Gobi Desert 08–09.2018. The coordinates of the areas of the search works, the search method and description of the meteorite substance are given.
Yesiltas M. Zolensky M. Glotch T. D.	The First Turkish Antarctic Meteorite Search Expedition [#6161] Details of meteorites recovered from Antarctica by the Turkish Antarctic Meteorite Search Expedition will be presented.
Stephen N. R. Brand H. E. A. Tomkins A.	Meteorites of the Nullarbor Plain; Recent Recovery and Classification Efforts [#6136] More than 200 new meteorites have been recovered by a team from Monash University (Australia) and the University of Plymouth (UK) from the Nullarbor Plain (South Australia) since 2008. Here we describe recent recovery and classification efforts.
Saavedra M. E. Roszjar J. Humayun M. Tanaka R. Varela M. E. Lira R.	Malotas: A New View of an Old Fall from Argentina [#6168] The discovery of new fragments of Malotas, provides the opportunity to (re)evaluate the 1931 fall under a different view.
Chennaoui Aoudjehane H. D’Orazio M. Folco L. Rosén Å. V. Hofmann B. A. Moggi Cecchi V.	Gueltat Zemmour: An L4 Ordinary Chondrite Fall in Morocco on August 2018 [#6295] Gueltat Zemmour is an L4 fresh fall occurred in the Moroccan Sahara on August 2018. Field work allowed us to document the strewnfield and fireball information as well as having samples for the classification. It’s the 17th official Moroccan fall.
Yoneda S. Yamaguchi A. Ojima T. Kimura M. Okazaki R.	The Komaki Meteorite: A New Fall in Japan [#6229] We report a new L6 chondrite fall in Japan. The Komaki meteorite fell at Komaki-city, Aichi-prefecture, Japan on September 26, 2018. It weighs more than 650g in total and is almost entirely covered by the fusion crust.
Komatsu M. Yamaguchi A. Ito M. Yoneda S. Saito T. Ohgane T. Hayashi T. Sakamoto M. Mikouchi T. Kimura M.	Ryuseito: The Japanese Swords made from Shirahagi Iron Meteorite. [#6216] Ryuseito, the Meteor Swords, are the Japanese swords made from iron meteorite in 1898. We have investigated the historical background of making the meteor swords and non-destructive observation of the Ryuseito.
Hoffmann V. H. Wimmer K. Hochleitner R. Kaliwoda M. Uysal I.	Magnetic Classification and Shock Stage (on Plagioclase by Raman Spectroscopy) of the Saricçiçek Meteorite (Howardite) [#6449] At September 2, 2015, a large meteorite fall was observed and documented near Sariçiçek in Turkey (see consortium study [1]). We have investigated magnetic signature and shock stage in more detail.
Korochantseva E. V. Verchovsky A. B. Lorenz C. A. Buikin A. I. Korochantsev A. V.	The Ozerki Meteorite: Petrology and the First Data on Noble Gases and Nitrogen Released by Stepwise Combustion and Crushing Methods [#6458] Here we present petrological information on the Ozerki meteorite and preliminary data on noble gases and nitrogen extracted by stepped combustion and crushing methods.
Li S. J. Leya I. Smith T. He H. Y.	Cosmic-Ray Exposure Ages of Some Primitive Achondrites [#6174] The CRE ages of lodranite meteorite NWA 8118 and other primitive achondrites have been reported.

Tuesday, July 9, 2019

POSTER SESSION: PRESOLAR GRAINS AND THE ORIGINS OF ISOTOPIC ANOMALIES IN METEORITIC MATERIALS

5:30 p.m. Poster Room

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Authors (*Denotes Presenter)	Abstract Title and Summary
Hutchison M. Bodénan J.-D. Mayer L. Schönbächler M.	Investigating Dust Size and Presolar Grain Distribution in the Protoplanetary Disk Using SPH Simulations. [#6275] Smoothed particle hydrodynamics 3D simulations are used to study sorting of grains in the protoplanetary disk and to assess whether reactions between dust grains and the background gas disk could explain the distribution of nucleosynthetic anomalies.
Xu Y. C. Gu L. X. Li Y. Mo B. Lin Y. T.	Focused Ion Beam (FIB) and Microtome Combined Ultrathin Slice Preparation for Transmission Electron Microscopy (TEM) Observation [#6115] A method of combining FIB and microtome technique to prepare ultrathin slices from a micron-sized presolar graphite grain.
Lyon I. C.	High Spatial Resolution Isotope Analyses of Presolar SiC Grains from the Cold Bokkeveld (CM2) Carbonaceous Chondrite [#6385] Results are presented for measurements of C, N, Si, and Mg isotope ratios in presolar SiC from the Cold Bokkeveld (CM2) meteorite. These are compared with results from Murchison (CM2) which has previously been extensively studied.
Garg A. Goyal V. Marhas K. K.	Savior of Presolar Grains — Ice Mantle: Myth or Truth [#6445] Presolar grain destruction comparison between core mantle structure of grain vs. no mantle grain.

Tuesday, July 9, 2019

POSTER SESSION: SPECIAL SESSION: RYUGU, BENNU, AND SMALL BODIES

5:30 p.m. Poster Room

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Authors (*Denotes Presenter)	Abstract Title and Summary
Righter K.	Overview of Carbonaceous Chondrites in the US Antarctic Meteorite Collection: Implications for Understanding Bennu and Ryugu [#6430] Recent arrival of OSIRIS-REx at Bennu and Hayabusa2 at Ryugu have prompted the comparison of these asteroids to many carbonaceous chondrites. Here is an overview of the relevant carbonaceous chondrites in the US Antarctic meteorite collection.
Lindgren P. Hallis L. J. Cohen B. E. Hanna R. D. King A. J. Lee M. R.	Mineral Fingerprints of the Post-Hydration Heating of CM Carbonaceous Chondrites: Implications for Understanding Ryugu and Bennu [#6288] Tracking mineralogical changes to the aqueously altered CM ALH 83100 during laboratory heating.
Mita H. Amano K. Kobayashi S. Enokido Y. Sakatani N. Arai T. Nakamura T.	Thermal Inertia of Fine-Grained Powder of the Murchison CM Chondrite Determined by Experimental Heating [#6225] We conducted heating experiments of a powder of CM chondrite to determine the thermal inertia and found that the thermal inertia of CM powder is much lower than the CM chip. Our results will contribute to interpret the thermal inertia of Ryugu.
Ciceri F. Hanton L. Hildebrand A. R.	Physical Properties of an Unweathered CO Chondrite Fall, Moss [#6491] We have measured the physical properties of a recent CO fall (2006), Moss. We used both non destructive and destructive methods: no previous destructive mechanical measurements have been done on a CO meteorite.
Roskosz M. Beck P. Zhao J. Bi W. Alp E. E.	Mapping the Iron Distribution and Valence State in Primitive Meteorites by Synchrotron Mössbauer Spectroscopy [#6339] We use the unique Synchrotron Mossbauer Spectroscopy (SMS) developed at the APS to produce detailed maps of the mineralogy of iron. This development will be crucial to analyze returned samples from the next space missions (Hayabusa 2 and Osiris Rex).
Harries D. Schmidt D. Fazio A. Liermann H.-P. Langenhorst F.	Dynamical Compression of Serpentine in Membrane-Driven Diamond Anvil Cells: Insights into Amorphization by Synchrotron XRD [#6294] We have studied the pressure-induced amorphization of serpentine to better understand the role of impact events in altering the mineralogy of C-group asteroidal regoliths.
Ishimaru K. Tachibana S. Yamamoto D.	Dehydration and Recrystallization Experiments of Serpentine for Understanding Thermal History of Hydrated Asteroids [#6348] Aiming to constrain the temperature and duration of thermal metamorphism on hydrated asteroids, we conducted heating experiments of serpentine in a vacuum. Our results should be able to estimate thermal histories of parent bodies of Ryugu and Bennu.
Ogawa N. O. Kebukawa Y. Zolensky M. Takano Y. Ohkouchi N.	Isotopic Measurements of <100 ng Carbon and Nitrogen through EA/IRMS and its Application to Extraterrestrial Materials [#6208] We’ve modified automated EA/IRMS system to obtain reliable quantities and isotopes of C and N from 0.1 to 3mg of meteorites, while keeping the quality of the data. The nano-scale EA/IRMS and its results from several meteorites will be introduced.
Uesugi M. Uesugi K. Ito M. Tomioka N. Ohigashi T. Yamaguchi A. Imae N. Karouji Y. Shirai N. Yada T. Abe M. Hirahara K. Kodama Y. Sakurai I.	Preparation for the Analysis of Hayabusa2 Returned Samples [#6269] We developed techniques and devises for the analysis of Hayabusa2-returned samples, such as inter-facility sample transfer container and universal sample holder applicable to multiple instruments, and procedures for the sequential analysis.
Arakawa S. Takemoto M. Nakamoto T.	Thermal Conductivity of Bifractal Aggregates: Theoretical Interpretation [#6114] The internal structure of compressed BCCA aggregates is bifractal. Therefore, we can predict the filling factor dependence of the thermal conductivity if we know the relation between the geodesic distance and the gyration radius of a BCCA aggregate.
Arai T. Kobayashi M. Yamada M. Senshu H. Maeda K. Wada K. Ohno S. Ishibashi K. Ishimaru R. Matsui T. Fortenberry M.	METEOR: Two-Year Meteor Observation from the International Space Station [#6493] METEOR is the two-year meteor observation project onboard the International Space Station.
Belkovich O. I. Andreev A. O. Nefedyev Y. A.	The New Method of Processing Data on Meteoroids Using Modern Observations [#6061] The work focuses on the reduction of modern observations of meteoroids. The new method of processing the modern observations of meteoroids, which provides comparable with the radar observations results, was developed.
Sergienko M. V. Sokolova M. G. Andreev A. O. Nefedyev Y. A.	The Kappa Cygnids Meteoroid Shower and its Connection with Near-Earth Asteroids [#6056] The purpose of the research is to study the Kappa Cygnids meteoroid shower’s connections with various groups of asteroids crossing the Earth’s orbit on the basis of the meteor shower’s structure observed.
Sergienko M. V. Sokolova M. G. Andreev A. O. Nefedyev Y. A.	Analysis of the Genetic Connections Between Near-Earth Objects and Delta Cancrids Meteoroids [#6057] The purpose of the paper is to study the activity of the poorly investigated Delta Cancrids meteoroids and to search for close orbits among Near-Earth objects.
Sokolova M. G. Sergienko M. V. Nefedyev Y. A. Andreev A. O.	Dynamic Evolution of the Orbits of 2001YB5 and (356394) 2010QD2 Asteroids [#6059] The aim of this paper is to analyze the changes in orbital elements of 2001YB5 and 2010QD2 asteroids over a long-term period and to identify them with the Delta Cancrids (DCA) meteor shower. The HORIZONS integrator was used for that.
Sokolova M. G. Sergienko M. V. Andreev A. O. Nefedyev Y. A.	The Radiants Distribution of the Delta Cancrids Meteoroids [#6060] The aim of this paper is to refine the coordinates of the Delta Canrcids (DCA) branches, their drift motion to study features of radiants distribution and orbit elements for DCA use television observations and the individual radiants coordinates.
Nefedyev Y. A. Andreev A. O. Hudec R. Belkovich O. I. Demina N. Y.	The Method of Analyzing the Complex of Sporadic mMeteoroids [#6073] The work focuses on the important task of meteor astronomy the construction of the model of sporadic meteor bodies complex in the neighborhood of the Earth’s orbit.
Andreev A. O. Nefedyev Y. A. Hudec R. Demina N. Y. Demin S. A.	Multi-Factor Analysis of Astrophysical Parameters for Circumlunar and Circumsolar Meteoroids and Study of Their Genetic Connections [#6074] The work focused the analyze and simulate the dynamic processes related to near-Moon objects, the interrelated tasks on the study of meteoroid environment, its influence on physical and chemical properties of the Moon using the seismic data.
Kuznetsov E. D. Vasileva M. A.	On New Members of Asteroid Clusters Similar to Asteroid Pairs [#6192] We have searched for new members of young asteroid families. We have found six possible new members of Rampo asteroid family and one possible new member of Hobson family. We also have discovered new as-teroid cluster, which includes three asteroids.
Kuznetsov E. D. Rosaev A. E. Plavalova E.	The Yarkovsky Effect Estimation for Some Asteroid Pairs with Close Orbits [#6004] We have estimated the values of maximal Yarkovsky acceleration for some pairs of asteroids with very close orbits and possibly very small ages. The rates of the semimajor axis drift have been obtained by normalization using (101955) Bennu parameters.
Nefedyev Y. A. Andreev A. O.	The Isodensity Analysis of the Comets [#6072] The isodensity models was applied to analysis Bennett, 45P/Honda, and Arend-Roland comets. This method allows comparing isophotes for various comets and also allows conducting a comparative analysis of cometary activity.
Andreev A. O. Akhmedshina E. N. Nefedyev Y. A. Hudec R.	Study of the Fractal Properties of Ceres [#6075] In this work, fractal properties of Ceres asteroid were analyzed using the data from “Dawn” space mission. The 3D model of Ceres confirmed the conclusion that the structure of Ceres surface is a complex fractal system.
Kochemasov G. G.	Asteroid Ryugu: A “Diamond” in the Sky Like Many Other Small Celestial Bodies [#6038] Inertia-gravity waves in Cosmos warp bodies producing shapes. Fundamental wave1 makes ubiquitous tectonic dichotomy. The wave2 produces octahedron structure. Diamond or octahedron (or parts of it) is observed in many small bodies including Ryugu.

Tuesday, July 9, 2019

POSTER SESSION: VIEWS OF MARS FROM METEORITES, ANALOGS AND REMOTE-SENSING

5:30 p.m. Poster Room

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Authors (*Denotes Presenter)	Abstract Title and Summary
Morita T. Sano Y. Takahata N. Misawa K. Sakata S. Terada K.	U-Pb Dating of Baddeleyite in Zagami by NanoSIMS Imaging Analysis [#6123] We have developed method of U-Pb dating using NanoSIMS where larger area is scanned, and the counting data are extracted from the sample grain using a data-processing. This method is applied to small baddeleyite in Zagami, a basaltic Shergottite.
Serbestoglu M. Yesiltas M. Yalcin M. G.	Mineralogy of Northwest Africa 6963 Determined by Raman Spectroscopy [#6158] Chemical components of a martian meteorite (NWA 6963) are investigated with micro-Raman spectroscopy.
Mardon A. A. Zhou G.	Prehistorical Martian Permafrost from Meteoritical Evidence [#6190] The hypothesis that deeply buried permafrost layer has potentially survived under martian hydraulic and thermal condition is supported and needs further investigations.
Wu Y. Hsu W.	Trace Element Geochemistry and U-Pb Chronology of the Basaltic Shergottite Northwest Africa 8653 [#6282] The U-Pb and Pb-Pb analysis of NWA 8653 baddeleyite reveals a young age around 190 Ma. And the Pb-Pb analysis of phosphate and maskelynite concides with old ages. The old ages may result from a mixture and inheritance of Pb instead of radiogenic Pb.
Patel R. P. Benedix G. Forman L. Timms N.	Investigating Shock Deformation with Launch-Paired Martian Shergottites [#6333] We have examined 4 shergottites that have the same cosmic ray exposure age and span differentshergottite classes to investigate the shock features of meteorites that likely sample from the same ejection event on Mars.
Mari N. Hallis L. J. Lee M. R.	Chlorine Abundance in the Shergottite Parental Melt Amphibole and Apatite in Tissint and Zagami [#6041] Amphiboles and apatites were analysed in Tissint and Zagami, reporting a Cl-poor magma source for the shergottites.
Irving A. J. Kuehner S. M. Righter M. Lapen T. J. Busemann H. Ziegler K. Hoefnagels B.	Petrologic-Isotopic Characterization of Nakhlite Northwest Africa 12542 [#6401] The 11th known nakhlite contains conspicuous martian alteration assemblages in intercumulus regions and within cumulus olivine grains.
Nagao K. Park J. Choi J. Baek J. M. Haba M. K. Mikouchi T. Zolensky M. E. Herzog G. F. Park C. Lee J. I. Lee M. J.	Genetic Relationship Between Martian Chassignites and Nakhlites Revealed from Noble Gases [#6183] Based on cosmic-ray exposure ages and heavy noble gas compositions we propose that the chassignites and nakhlites were located within a relatively narrow area from which both nakhlites and chassignites were launched by a single impact.
Piercy J. D. Bridges J. C. Hicks L. J. MacArthur J. L. Greenwood R. C. Franchi I. A.	Olivine Alteration In Shergottite Northwest Africa 10416 [#6394] Ol-phyric shergottite NWA 10416 has distinctive altered megacryst olivine. TEM analysis of olivine suggests that its aqueous alteration postdates shock veins, indicating a terrestrial origin. Oxygen-isotope analysis is consistent with this.
Piercy J. D. Bridges J. C. Hicks L. J.	Carbonates Within Lafayette [#6408] Metastable Ca-siderite once comprised more than 4% of the Lafayette nakhlite. STEM and XANES analyses show how its partial dissolution and replacement by ferric saponite and serpentine contributed to the evolving nature of the nakhlite fluid.
Niihara T. Misawa K.	Petrogenesis on Miller Rage 090032: Comparison with Other Martian Meteorites [#6171] We conduct mineralogical studies on Miller Range 090032 and discuss petrogenesis of the rock by comparison with other martian meteorites.
Christou E. V. Hallis L. J. Hayward C. L. Lee M. R.	Unusual Apatite in the Unusual Martian Meteorite Northwest Africa (NWA) 8159. [#6283] We are investigating NWA 8159 apatite to define the parental melt and potential source region volatile composition, and compare this with those of other Martian meteorites.
Belkovich O. I. Andreev A. O. Nefedyev Y. A.	The Analysis of the Meteoroid Danger on the Earth-Mars Route [#6062] This paper focuses on the determination of meteorite hazard on the Earth-Mars route and the development of the State Standard according to the data provided by three sensors installed on the spacecraft travelling from the Earth’s orbit to that of Mars.
Griffin S. Lee M. R. Cohen B. E. Daly L.	Crystallisation and Alteration of the Yamato Nakhlites [#6376] Yamato nakhlites / Similar but different? / Tthree flows or just one?

Wednesday, July 10, 2019

AWARD CEREMONY

9:00 a.m. Auditorium

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Times	Award	Recipient(s)
9:00 a.m.	Leonard Medal Recipient Citation	Hisayoshi Yurimoto
9:15 a.m.	Barringer Medal Recipient Citation	Mark Cintala
9:30 a.m.	Nier Prize Recipient Citation	Aki Takigawa Rhonda M. Stroud
9:45 a.m.	Service Award Recipient Citation	Rainer Bartoschewitz Jisum Park
10:00 a.m.	Student Awards	To Be Announced
10:15 a.m.	Leonard Medal Lecture	Hisayoshi Yurimoto

Thursday, July 11, 2019

SPECIAL SESSION: ANALYSIS OF LUNAR SAMPLES: A CELEBRATION OF 50 YEARS SINCE APOLLO 11

9:00 a.m. Auditorium

Chairs: Ryan Zeigler and Nicole Lunning

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
9:00 a.m.	Zeigler R. A. *	The Apollo Sample Collection: 50 Years of Solar System Insight [#6260] A review of the scientific legacy of the Apollo Sample collection.
9:15 a.m.	Dauphas N. * Nie N. X.	Why is the Moon Depleted in Moderately Volatile Elements? [#6202] The heavy K and Rb isotopic compositions of lunar rocks can provide new and critical constraints on the setting of lunar formation.
9:30 a.m.	Qin L. * Shen J.	Redox Controlled Planetary Cr Isotopic Fractionation [#6436] We present a quantitative model that relates the Cr isotope compositions of basalts from Earth, Moon and Vesta, to the fractional crystallizing assemblage, the degree of fractional crystallization, and the Cr^2+/ΣCr ratios in minerals and melts.
9:45 a.m.	Zhang Z. F. * Wu W. Li X. An Y. J.	Calcium Isotopic Composition of the KREEPs [#6013] A lunar meteorite NWA 5000 was analysed and calcium isotopic composition of KREEPs was estimated to be 0.82–0.86%, indistinguishable from that of the lunar crust under the current analytic techniques.
10:00 a.m.	Thiemens M. M. * Sprung P. Debaille V. Münker C.	KREEP and Mg-Suite Investigations Through Northwest Africa 6950 [#6392] We analyzed mineral separates from the lunar KREEP rich meteorite NWA 6950. We find the same age (3.1 Ga) through a Lu-Hf isochron as previously reported for baddeleyite. Comparison of NWA 6950 with Apollo KREEP samples show a pristine εHf signature.
10:15 a.m.	Assis Fernandes V. * Czaja P. Fawcett L. Fonseca R. O. C. Khan A. Liebske C. Nemchin A. Sliwinski J. Snape J. Whitehouse M. Willbold M.	Investigating Volcanism Within Imbrium and Serenitatis Basins: A Systematic Study of Basaltic Regolith Fragments [#6067] Apollo 15 and 17 basaltic regolith fragments obtained along ejecta of small craters in the landing site vicinity have the potential to sample vertically and horizontally volcanism within Imbrium and Serenitatis Basins.
10:30 a.m.	Zhang B. * Reger P. M. Gannoun A. Boyet M. Schrader D. L. Wadhwa M. Ferrière L. Bouvier A.	Pb-Pb Chronometry of Impact Melts from Lunar Meteorite Oued Awlitis 001 [#6479] We present Pb-Pb isotopic analyses of a fragment of crystallized impact melt from lunar meteorite Oued Awlitis 001. An Pb-Pb isochron age of 3902.2 ± 4.8 Ma places constraints on the Orientale-basin-formation age.
10:45 a.m.	Che X. C. * Nemchin A. A. Long T. Liu D. Y.	High Resolution SHRIMP Phosphate U-Pb Ages in Sayh Al Uhaymir 169: Possible Age of the Pre-Imbrium Impact [#6124] The phosphates in SaU-169 U-Pb system were analyzed using a SHRIMP IIe-Mc, Combined with the ratios of U/Pb from Single-collector and Pb/Pb from Multi-collector, This study yielded two impact ages of 3915.4 ± 5.2Ma and 3940 ± 3.5Ma.
11:00 a.m.	Pieters C. M. * Hiroi T. Osinski G.	The Shocking Ground Truth of Lunar Samples [#6441] Featureless spectra have an important story to tell if we can find it!
11:15 a.m.	Nishiizumi K. *	Fifty Years of Cosmogenic Nuclide Studies in Lunar Samples: What We Have Learned and What We Would Like to Know [#6085] Cosmogenic nuclides in lunar samples are continuously measured since return from the Moon. Analysis of cosmogenic nuclides in lunar samples provide the ground truth for lunar rocks and regolith histories.
11:30 a.m.	Nishiizumi K. Caffee M. W. *	Lunar Surface Regolith Processes: The Cosmogenic Nuclide Record in 15008 [#6087] 15008 is the least disturbed among all opened lunar cores. New ^10Be, ^26Al, and ^41Ca measurements of the core will be presented. All nuclide profiles, in addition to previous ^36Cl and ^53Mn, are the best calibration profiles for lunar core studies.
11:45 a.m.	Jull A. J. T. * Cheng L. Burr G. S.	14C Studies of Shadowed Lunar Soil at Apollo 17 [#6055] 14C measurements were carried out on permanently shadowed and unshaded soils from the Apollo 17 mission.
12:00 p.m.	Morino P. * Busemann H. Maden C. Schönbächler M.	Determining Cosmogenic Contributions in Apollo Samples with Noble Gaz Measurements [#6278] This study propose to determine the different cosmogenic contributions in Apollo samples by a systematic high-sensitivity study of noble gas compositions (He to Xe) in order to select the best candidates to determine the Cr composition of the Moon.
12:15 p.m.	Will P. * Busemann H. Riebe M. E. I. Maden C.	Regolith History of Six Lunar Regolith Breccias Derived from Noble Gas Elemental and Isotopic Abundances [#6494] We analyzed the noble gas isotopic and elemental composition of six lunar regolith breccias of different lithologies and discuss regolith processing, cosmic-ray exposure ages, average shielding depths, and possible pairing with other meteorites.
12:30 p.m.	Lunning N. G. * Gross J.	Texturally Zoned Silicon-Bearing Iron-Nickel Metal Inclusions in the Lunar Feldspathic Regolith Breccia Northwest Africa 11303 [#6076] Highly reduced exogenic metal was discovered in a lunar meteorite breccia that also contains other less reduced exogenic metals, which indicate two separate impactors contaminated this regolith sample from the Moon.

Thursday, July 11, 2019

CARBONACEOUS CHONDRITES I: COMPONENTS, POST-ACCRETION HISTORIES, AND CLASSIFICATION

9:00 a.m. Small Auditorium

Chairs: Hope Ishii and Wataru Fujiya

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
9:00 a.m.	Matsumoto M. * Tsuchiyama A. Nakato A. Matsuno J. Miyake A. Kataoka A. Ito M. Tomioka N. Kodama Y. Uesugi K. Takeuchi A. Nakano T. Vaccaro E.	Ultra Porous Lithology, a Fossil Asteroidal Ice, in Carbonaceous Chondrite Acfer 094: Implications for Parent Body Formation by Icy Dust Agglomeration [#6089] We have discovered fossil icy-dust in a primitive meteorite Acfer 094, which provides new insight into asteroid formation in the early solar system.
9:15 a.m.	Howard K. T. * Zanda B.	Why is the Degree of Aqueous Alteration Variable? [#6178] Using bulk modal mineralogy and component (chondrule vs. matrix) abundances for the CM chondrite Paris and CM falls, we reconstruct maximum initial H2O contents of CMs. We aim to answer the question: why is the degree of aqueous alteration variable?
9:30 a.m.	Bonal L. * Beck P. Nakamura T. Enokido Y. Gattacceca J. Eschrig J.	A Complex Interplay of Heat and Aqueous Alteration Experienced by the Paris CM Chondrite [#6298] By combining several analytical techniques on sub-samples of Paris, our objectives are to assess aqueous and thermal alteration of the meteorite at the millimeter scale and further refine our understanding of reflectance spectra of such materials.
9:45 a.m.	Hewins R. H. * Zanetta P.-M. * Zanda B. Le Guillou C. Gattacceca J. Sognzoni C. Pont S. Piani L. Rigaudier T. Leroux H. Bernard S. Deldicque D. Marrocchi Y.	Northwest Africa 12563 CM2-AN, and the Different Alteration Styles in C2 Chondrites [#6382] NWA 12563 is not typical of CMs. Its matrix contains Mg-rich phyllosilicate, amorphous silicate and 6.8% magnetite, no TCI, and chondrule metal is pseudomorphed by serpentine. There are different alteration styles in C2 chondrites.
10:00 a.m.	Ishii H. A. * Ohtaki K. K. Bradley J. P. Bustillo K. C. Villalon K. L. Davis A. M. Stephan T. Longo P.	GEMS-Like Material in Paris Matrix and GEMS in Interplanetary Dust Particles: an EDX and EELS Comparison [#6405] Paris, the least altered CM, has GEMS-like amorphous silicates in its matrix. We compare these to amorphous silicate GEMS in cometary type interplanetary dust particles and discuss possible relationships.
10:15 a.m.	Tsuchiyama A. * Takigawa A. Hirose T. Kawano H. Imura Y. Enju S. Igami Y.	Possible Origin of Primitive Amorphous Silicates in Carbonaceous Chondrites [#6342] A possible process of the formation and alteration of amorphous silicates (GEMS-like materials) in primitive carbonaceous chondrite is proposed based on the observation of the GEMS-like materials and condensation and aqueous alteration experiments.
10:30 a.m.	Villalon K. L. * Bradley J. P. Ishii H. A. Ohtaki K. K. Davis A. M. Stephan T.	A Nanoscale Analytical STEM Study of the Paris Meteorite [#6475] The mineralogy of the nanophase components of GEMS-like material in the Paris meteorite has been investigated using Analytical STEM.
10:45 a.m.	Patzek M. * Kadlag Y. Bischoff A. Visser R. Becker H. John T.	Chromium Isotopes and Trace Element Concentration of Xenolithic C1 Clasts in Brecciated Chondrites and Achondrites [#6027] We obtained Cr isotope and REE concentration of C1 and CM-like clasts found in ureilites, HEDs, and CR chondrites showing that C1 clasts from ureilites show high excess in ^54Cr relative to those from CR chondrites and common bulk CI chondrites.
11:00 a.m.	McCain K. A. * McKeegan K. D. Liu M. C. Brearley A. J.	Measurements of Carbon and Oxygen Isotopes in Allan Hills 84034 Carbonates [#6418] We present C and O stable isotopic measurements of calcites and dolomites in the highly altered CM chondrite Allan Hills 84034, performed with matrix-matched standards.The two carbonate types represent distinct populations and alteration conditions.
11:15 a.m.	Marrocchi Y. * Vacher L. G. Piralla M.	Thermal Conditions of Fluid Circulation in Hydrated Asteroids [#6120] Water-rich primitive meteorites (CM chondrites) contain alteration phases (serpentines and carbonates) whose O-isotopic compositions recorded a gradual increase of the temperature during the duration of aqueous alteration.
11:30 a.m.	Piralla M. * Marrocchi Y. Verdier-Paoletti M. J. Vacher L. G. Villeneuve J. Piani L. Bekaert D. V. Gounelle M.	Primordial Water and Dust of the Solar System: Insights from In-Situ Oxygen Measurements of CI Chondrites [#6184] Oxygen isotopic compositions of olivine and carbonate grains mechanically-isolated from CI chondrites were measured by SIMS. Our results suggest that primordial dust of the solar system is ^16O-poor with Earth-like O-isotopic compositions.
11:45 a.m.	Visser R. * John T. Patzek M. Bischoff A. Whitehouse M. J.	Manganese-Chromium Ages of Carbonates in Aqueously-Altered Carbonaceous Chondrites and Clasts [#6172] Mn-Cr ages of dolomite and calcite in CI, CM, and C2ung chondrites as well as C1 and CM-like clasts.
12:00 p.m.	Lee M. R. * Cohen B. E. King A. J.	Alkali-Halogen Metasomatism of Meteorite Hills 01075 (CM2) Driven by Shock Heating: An Analogue for Ryugu [#6070] Reflectance spectra of Ryugu are similar to thermally/shock metamorphosed carbonaceous chondrites. MET 01075 has undergone metasomatism driven by shock-heating, followed by aqueous alteration.
12:15 p.m.	Fujiya W. * Higashi H. Yamaguchi A. Kimura M. Hashizume K.	Anhydrite in the Jbilet Winselwan CM Chondrite: Implications for the Heat Source of Post-Alteration Thermal Metamorphism [#6214] Jbilet Winselwan is a CM chondrite that underwent aqueous alteration and subsequent thermal metamorphism. The presence of anhydrite in this meteorite may suggest the decay energy of aluminium-26 as the heat source of thermal metamorphism.
12:30 p.m.	Baliyan S. * Moitra H. Sarkar S. Ray D. Panda D. K. Shukla A. D. Bhattacharya S. Gupta S.	Mineralogy and Spectroscopy (VNIR and FTIR) of Mukundpura CM2: More Insights into the Aqueous Activity and Post Accretion History [#6134] Mineralogical and spectroscopic data are integrated to deceipher the extent of aqueous alteration in Mukundpura meteorite. Along with VNIR and FTIR, XRD has been used to identify and quantify the phases for precise mineralogical characterisation.
12:45 p.m.	Noguchi T. * Sagae R. Ishibashi H. Odake S. Kagi H. Akasaka M. Kimura M. Yamaguchi A.	Relationship Between Fe^3+ Contents in Serpentine and Degrees of Aqueous Alteration Among CM Chondrites: A Combined Mössbauer, Xanes and EPMA Study [#6032] We performed a combined study of Fe Kα XANES and ^57Fe Mössbauer spectroscopy to estimate Fe^3+/ΣFe ratios of serpentine in CM chondrites. We found a positive correlation between average Fe*/(Mg+Fe*) ratios and average Fe^3+/ΣFe ratios of serpentine.

Thursday, July 11, 2019

REFRACTORY INCLUSIONS

9:00 a.m. Conference Room 1

Chairs: Mutsumi Komatsu and Samuel Ebert

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
9:00 a.m.	Manga V. R. * Zega T. J. Muralidharan K.	Thermodynamic Modeling of Pyroxene Solid Solutions: Revisiting the Condensation Sequence of Refractory Minerals in Calcium- and Aluminium-Rich Inclusions [#6226] We report the condensation calculations of Al-Ti-rich pyroxene solid-solutions and present the revised condensation sequence of various refractory mineral phases that are observed within the calcium- and aluminium-rich inclusions (CAIs).
9:15 a.m.	Han J. * Park C. Keller L. P.	Microstructural Record of Evolving Condensation Processes in Fine-Grained Ca-Al-Rich Inclusions from the Reduced CV3 Chondrites [#6435] We discuss the evolving sequence of high-temperature condensation and gas-solid reactions that grew single grains into layered nodules based on FIB/TEM analyses of FGIs from the reduced CV3 chondrites.
9:30 a.m.	Komatsu M. * Fagan T. J. Krot A. N. Nagashima K. Petaev M. I. Kimura M. Yamaguchi A.	Ultra-Refractory CAI in a Low-Ca Pyroxene- and Silica-Bearing Amoeboid Olivine Aggregate in a CR Chondrite: Formation by Gas-Solid Condensation over a Wide Temperature Range [#6167] AOAs have avoided significant melting after the aggregation, retaining records of nebular gas-solid interactions. Here we describe an AOA from the CR chondrite Y-793261 providing an evidence for gas-solid condensation over a wide temperature range.
9:45 a.m.	Fukuda K. * Kita N. T. Tenner T. J. Kimura M.	Mg Isotope Ratios and Minor Element Abundances of AOAs: Insights into Their Origins [#6206] Relationships between chemical, textural, and isotopic signatures of AOAs were investigated. Compact and porous AOAs experienced different nebular histories.
10:00 a.m.	Liu M.-C. * Han J. Brearley A. J. Hertwig A. T.	Aluminum-26 Chronology of Dust Coagulation and Early Solar System Evolution [#6182] Early solids grew fast / But how fast? / Small inclusions tell you.
10:15 a.m.	Kawasaki N. * Park C. Sakamoto N. Yurimoto H.	Variations in Initial ^26Al Abundances among Fine-Grained Ca-Al-Rich Inclusions in the Reduced CV Chondrites [#6021] We obtained Al–Mg mineral isochrons of five fine-grained Ca-Al-rich inclusions from the reduced CV chondrites. Inferred initial ^26Al/^27Al range from (5.19 ± 0.17) to (3.35 ± 0.21) × 10^–5, corresponds to a formation age spread of 0.44 ± 0.07 Myr.
10:30 a.m.	Wada S. * Kawasaki N. Yurimoto H.	Oxygen and Al-Mg Isotope Systematics of a Hibonite-Melilite-Rich Fine-Grained CAI in the Reduced CV Chondrite Northwest Africa 8613 [#6028] Oxygen and Al-Mg isotope systematics correlated with crystal growth sequences for a fine-grained CAI imply the presence of the solar nebular gas with variable oxygen isotope compositions 0.16 ± 0.02 Myr after the formation of canonical CAIs.
10:45 a.m.	Sakamoto N. * Kawasaki N.	Extreme ^16O-Rich Refractory Inclusions in the Isheyevo Chondrite [#6069] Four refractory inclusions consist of grossite rimmed by spinel, melilite (+diopside) have extreme ^16O-rich compositions in the Isheyevo chondrite located on the extension of cosmic symplectites passing through chondrules.
11:00 a.m.	Park C. * Sakamoto N. Wakaki S. Kobayashi S. Kawasaki N. Yurimoto H.	Constraints on the Cooling Rate from ^16O-Rich Perovskite in a Compact Type A CAI from Allende [#6163] We report ^16O-enriched perovskite enclosed by ^16O-depleted melilite in a compact Type A CAI from Allende. O-isotopic compositions of both minerals are likely primary and the estimated cooling rate for the CAI is 1000–5000 K/hr.
11:15 a.m.	Krot A. N. * Ma C. Nagashima K. Davis A. M. Beckett J. R. Simon S. B. Komatsu M. Fagan T. J. Genzel P. T. Brenker F. Ivanova M. A. Bischoff A.	Mineralogy, Petrography, and Oxygen Isotopic Compositions of Ultrarefractory Inclusions from Carbonaceous Chondrites [#6109] We report on the mineralogy, petrography and in situ measured O-isotope compositions of 25 CAIs, presumably UR (rare earth elements have not yet measured in most of them), from CR2, CM2, C3.0, CO3.0–3.6, CV3.1–3.6, and CH3.0 carbonaceous chondrites.
11:30 a.m.	Yamamoto D. * Tachibana S. Kawasaki N. Kamibayashi M. Yurimoto H.	Oxygen Isotope Exchange Between CAI Melt and Water Vapor: An Experimental Study [#6095] Oxygen isotope exchange experiments between CAI melt and water vapor show that type B CAIs would be heated for at least a dozen days above the liquidus temperature of melilite.
11:45 a.m.	Park S. Y. * Park C. Kim H. N. Lee S. Y. Lee S. K.	Probing the Oxygen Environments in Melilite Melts Using ^17O NMR: Implication for Variable Oxygen Isotopic Compositions of Melilite in Type A CAIs [#6119] We report experimental results on the effects of composition on the structure of melilite glasses and melts [åkermanite and gehlenite join] with varying åkermanite content using high-resolution solid-state nuclear magnetic resonance.
12:00 p.m.	Mendybaev R. A. * Savage P. S. Kamibayashi M. Georg R. B. Tachibana S.	Silicon Isotopic Fractionation During Evaporation of CAI-like Melts in Low-Pressure Conditions [#6212] Si isotopes were measured in residues from low-P H2 and vacuum evaporation experiments. The experiments show that despite evaporation in low-P H2 is faster than in a vacuum, the chemical and isotopic fractionation of Mg and Si remains the same.
12:15 p.m.	Kamibayashi M. * Yamamoto D. Tachibana S. Yurimoto H.	Crystallization of Type B CAI Melt in Low-Pressure Hydrogen Gas and Implications for Formation Conditions of Igneous CAIs [#6254] Crystallization experiments of CAI-like melt in low pressure H2 gas showed that melilite crystallizes from the melt rim at H2 pressure of 10 Pa due to promoted evaporation of Mg and Si from the surface, suggesting the type B1 CAI formation at >10 Pa.
12:30 p.m.	Dunham E. T. * Liu M.-C. Hertwig A. T. Desch S. J. Wadhwa M.	CO3 and CH/CB CAIs suggest ^10Be was Distributed Uniformly in the Solar Nebula [#6346] We find that the short-lived radionuclide ^10Be was distributed uniformly in the solar nebula by measuring ^10Be-^10B isotope systematics in 11 CO3 and CH/CB CAIs; this indicates that ^10Be was likely produced in the molecular cloud by GCR irradiation.
12:45 p.m.	Torrano Z. A. * Rai V. K. Wadhwa M.	Chromium Isotope Compositions of Refractory Inclusions: Implications for Isotopic Variability in the Early Solar System [#6104] We report high-precision, mass-independent Cr isotope compositions for several CAIs and discuss the implications for isotopic variability in the CAI-forming region in the early solar system.

Thursday, July 11, 2019

SPECIAL SESSION: 50 YEARS OF JAPANESE ANTARCTIC METEORITES, ALLENDE AND MURCHISON

2:30 p.m. Auditorium

Chairs: Akira Yamaguchi and Sara Russell

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
2:30 p.m.	Yamaguchi A. * Imae N. Kimura M. Noguchi T.	A Japanese Antarctic Meteorites: Past, Current, and Future [#6224] We summarize the scientific outcome from Japanese Antarctic meteorites and present the current status of the curation. Also, we discuss future expeditions and curation of Antarctic meteorites.
2:45 p.m.	Griffin S. * Daly L. Lee M. R. Cohen B. E.	The Yamato Nakhlites: A Case Study for Three Dimensional Analysis [#6368] Analysing all / Yamato nakhlite samples / With EBSD.
3:00 p.m.	Russell S. S. * Spratt J. King A. J.	The Petrology and Geochemistry of CY Chondrites: A Study of Y amato 82162 and Yamato 980115 [#6402] We discuss the mineralogy, petrology and geochemistry of the unusual carbonaceous chondrites Y-980115 and Y-82162. They are genetically unrelated to other groups and we agree with others that they should be considered a new CY group.
3:15 p.m.	Kimura M. * Imae N. Yamaguchi A. Greenwood R. C. Komatsu M. Noguchi T.	Primitive CM-Related Chondrites: Their Characteristic Features and Classification [#6042] Three CM chondrites, Asuka (A) 12085, A 12169, and A 12236, experienced very low degrees of thermal metamorphism and aqueous alteration. Here we present our preliminary results on these samples and discuss their classification and primary features.
3:30 p.m.	Ebel D. S. * Fendrich K. V.	Murchison and Allende: Contrasts and Persistent Puzzles [#6116] We measured clasts compositions in Murchison and Allende. Despite well-known alteration, both show chondrule and matrix origins in single reservoirs of solar Mg/Si precursors. Allende inclusions are 5x as large as in Murchison. Puzzles remain.
3:45 p.m.	McKeegan K. D. * Liu M. C.	Origins of Refractory Inclusions in CM and CV Chondrites: Continuity or Dichotomy? [#6490] Allende and Murchison refractory inclusions are very different: why?
4:00 p.m.	Ma C. *	Discovery of Kaitianite, Ti^3+2Ti^4+O5, in Allende: A New Refractory Mineral from the Solar Nebula [#6098] 50 years of Allende / 19 new minerals discovered since 2007 / Kaitianite, the latest new mineral.
4:15 p.m.	Brearley A. J. * Johnson J. M. Williams B. Gattacceca J.	Variable Metasomatic Alteration of Allende-like Oxidized CV3 Chondrites: A Comparison of Antarctic and Northwest Africa CV3 Chondrites with Allende [#6111] Metasomatic alteration effects in oxidized Allende-like CV3 chondrites from Antarctica and Northwest Africa show significant variability in comparison with Allende. Sulfidization, oxidation, and alkali-halogen metasomatism appear to be decoupled.
4:30 p.m.	Fagan T. J. * Aoki R. Uesugi M. Tsuchiyama A.	Chondrule Shapes in 3-D: Pancakes vs. Baseballs Indicate Preferential Compression of Reduced vs. Oxidized CV Chondrites [#6049] In reduced CV chondrites, chondrules are shaped like pancakes, chondrule short axes are clustered, and ratios of matrix/(chondrules + refractory inclusions) are low relative to oxidized CVs, indicating preferential shock compression of reduced CVs.
4:45 p.m.	Forman L. V. Daly L. * Bland P. A. Corrigan C. M. McCoy T. J. Hoskin J. Anders C. Polley G. Trimby P. W. Piazolo S. Griffin S. Pickersgill A. E. O’Brien A. C. O.	Macroscale and Microscale Fabric Analysis of Allende [#6244] Macro and micro fabric observations in Allende using digital photography and EBSD. Here we present macro-scale alignment of CAIs in Allende, and micro-scale twinning in chondrule olivine.
5:00 p.m.	Kerraouch I. * Bischoff A. Zolensky M. E. Ebert S. Patzek M. Pack A. Schmitt-Kopplin P. Belhai D. Bendaoud A. Le L.	A Chondritic Xenolith in the Murchison (CM2) Chondrite Formed by Fluid-Assisted Percolation During Metasomatism [#6197] The main mineralogical characteristics of a large light-colored clast within the Murchison CM2 breccia are discussed in detail including data on the mineralogy, bulk chemistry, organics, and oxygen isotopes.
5:15 p.m.	Franchi I. A. * Greenwood R. C. Howard K. T. King A. J. Lee M. R. Anand M. Findlay R.	Oxygen Isotope Variation of CM and Related Chondrites: Multiple Parent Bodies or a Single Heterogeneous Source? [#6482] Oxygen isotope measurements reveal large variations in CM and related un-grouped meteorites that may indicate a common origin from a much more diverse parent body than previously considered.

Thursday, July 11, 2019

ORGANIC MATTER IN METEORITES

2:30 p.m. Small Auditorium

Chairs: Queenie Chan and François-Régis Orthous-Daunay

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
2:30 p.m.	Isa J. * Orthous-Daunay F.-R. Naraoka H.	Non-Targetted Analyses on Soluble Organic Compounds in Chondrites [#6415] Organic extract from carbonaceous chondrite and non-carbonaceous chondrites were studied by high-resolution mass spectrometry, Orbitrap.
2:45 p.m.	Schmitt-Kopplin Ph. * Hertzog J. Mazka M. Hertkorn N. Harir M.	(Ultra)high Resolution Organic Spectroscopy Analysis of Soluble Organic Matter in Meteorites [#6129] In this presentation we give a state of the art on the chemical description of the soluble organics of meteorites by non-targeted approach. Beside classical ESI-ionization method in mass spectrometry we introduce APPI coupled to FTICR MS.
3:00 p.m.	Orthous-Daunay F.-R. * Wolters C. Flandinet L. Vuitton V. Beck P. Bonal L. Isa J. Moynier F. Voisin D. Moran S. Horst S. Danger G. Vinogradoff V. Piani L. Bekaert D. V. Tissandier L. Isono Y. Tachibana S. Naraoka H. Remusat L. Thissen R.	Comparison of Molecular Complexity Between Chondrites, Martian Meteorite and Lunar Soils [#6317] We compare typical polymerization patterns found in chondritic organic mixtures and the features found in martian meteorites and lunar soils.
3:15 p.m.	Nevill N. D. * Clemett S. J. Messenger S. Thomas-Keprta K. L. Bland P. A. Timms N. E. Forman L. V.	An In-Situ Organic Molecular Study of the Matrices of a Primitive CR2 Chondrite Meteorite Hills 00426 [#6411] This coordinated study focuses on chemically categorizing molecular relationships of chemically and isotopically distinct organic species within the matrix of a very primitive CR: MET00426. Refining our understanding of primitive organic evolution.
3:30 p.m.	Parker E. T. * Engrand C. Dworkin J. P. Glavin D. P.	Amino Acids in Antarctic Micrometeorites [#6386] We analyzed 6 micrometeorites (MMs; ~7 µg total mass) for amino acids (AAs). Our results provide the first evidence of extraterrestrial n-w-AAs in MMs and suggest MMs may have delivered a broader range of AAs to early Earth than previously thought.
3:45 p.m.	Chan Q. H. S. * Nakato A. Kebukawa Y. Zolensky M. E. Nakamura T. Maisano J. A. Colbert M. W. Martinez J. E. Kilcoyne A. L. D. Suga H. Takahashi Y. Takeichi Y. Mase K. Wright I. P.	Effects of Short-Term Heating on the Organic Content of the Experimentally-Heated Tagish Lake Meteorite [#6222] Our short-duration heating experiment suggests that graphitization of organic matter in the Tagish Lake meteorite did not take place despite the samples being heated to 900 °C.
4:00 p.m.	Remusat L. * Bonnet J.-Y. Bernard S. Buch A. Quirico E.	Molecular and Isotopic Evolution of Insoluble Organic Matter of the Orgueil Meteorite upon Heating [#6381] The Orgueil IOM was subjected to 300°C and 500°C under Ar flux to shed light on D-rich and ^15N-rich organic components. The thermal evolution of H and N isotopes is decoupled, reflecting different behavior of these components hence different history.
4:15 p.m.	Quirico E. * Yabuta H. Beck P. Bonal L. Bardyn A. Nittler L. Alexander C. M. O’ D. Carrasco N. Szopa C.	Success and Failure of Shock Recovery Experiments for Simulating Short Duration Parent Body Heating [#6343] We present shock recovery experiments and discuss their relevance for simulating the heating processes experienced by heated C2s, type III chondrites, and N-rich UCAMMs.

Thursday, July 11, 2019

SURFACE PROCESSES ON AIRLESS BODIES

2:30 p.m. Conference Room 1

Chairs: Rosario Brunetto and Aki Takigawa

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
2:30 p.m.	Kobayashi S. * Nakamura T. Amano K. Matsumoto M. Golabek G. Ohtsuka K.	Experimental Heating of a Hydrated Carbonaceous Chondrite to Simulate Solar Radiation Heating of 3200 Phaethon [#6239] We performed heating experiment of CM chondrite to simulate solar radiation heating and observed surface and spectral changes after heating without modification of the surface condition. Spectral bluing and mm-size aggregate formation were observed.
2:45 p.m.	Takigawa A. * Asada Y. Nakauchi Y. Matsumoto T. Tsuchiyama A. Abe M. Watanabe N.	H^+ Ion Irradiation Experiments of Enstatite: Space Weathering by Solar Wind. [#6331] We performed 1 keV H^+ ion irradiation experiments of enstatite using a newly developed ion implantation apparatus. Blisters very similar to those of the Itokawa low-Ca pyroxene grains were observed in highly irradiated enstatite (1018 ions/cm^2).
3:00 p.m.	Leroux H. * de la Peña F. Le Guillou C. Lantz C. Brunetto R.	Spectral and Microstructural Modifications of Olivine Under Ion Irradiation [#6261] We present new results of ion irradiation experiments on Fe-rich olivine. We focus on the relationships between the spectral properties in the VIS-NIR and in the MIR and nanostructures studied by TEM and associated spectroscopies EELS and EDX.
3:15 p.m.	Thompson M. S. * Loeffler M. J. Morris R. V. Clemett S. J. Trang D. Keller L. P. Christoffersen R. Agresti D.	Investigating the Effects of Simulated Micrometeorite Impacts on a Carbonaceous Chondrite Through Coordinated Analysis [#6318] We simulate progressive space weathering via pulsed-laser irradiation of the Murchison meteorite. We use coordinated analysis to understand changes in the spectral properties and in the organic and inorganic components of the sample.
3:30 p.m.	Kaiden H. * Hiroi T. Misawa K. Tanaka H. Sasaki S. Robertson K. M. Milliken R. E. Masai H. Terao J.	Changes in Reflectance Spectra of a CM2 Carbonaceous Chondrite: Simulation of Space Weathering by Ultraviolet Irradiation [#6451] Ultraviolet irradiation experiments on a CM2 carbonaceous chondrite were performed to further investigate possible mechanisms of space weathering on asteroid surfaces.
3:45 p.m.	Laczniak D. L. * Thompson M. S. Dukes C. A. Morris R. V. Clemett S. J. Keller L. P. Christoffersen R.	Coordinated Analysis of an Ion Irradiated Carbonaceous Chondrite [#6434] We present results from H^2+ and He^+ irradiation of a CM2 Murchison slice to assess the chemical, structural, and spectral effects of space weathering on carbonaceous materials.
4:00 p.m.	Brunetto R. * Lantz C.	Laboratory Ion Irradiation of Carbonaceous Chondrites to Reproduce Space Weathering of Dark Asteroids [#6033] We performed 40 keV He^+ and Ar^+ ion irradiation of carbonaceous chondrites as a simulation of solar wind irradiation of carbonaceous asteroids. We determined which spectral features are more sensitive to the effects of space weathering.
4:15 p.m.	Nakamura T. * Lantz C. Kobayashi S. Nakauchi Y. Amano K. Brurnetto R. Matsumoto M. Takahashi M. Matsuoka M. Noguchi T. Matsumoto T. Miyake A. Tsuchiyama A. Zolensky M. E.	Experimental Reproduction of Space Weathering of C-Type Asteroids by He Exposure to Shocked and Partially Dehydrated Carbonaceous Chondrites [#6211] He irradiation was performed on shocked CM MET 01072 and partially dehydrated CI Y 980115, both of which show reflectance spectra similar to Ryugu. Spectral changes differ depending on meteorite mineralogy but also physical properties of meteorites.

Thursday, July 11, 2019

POSTER SESSION: CHONDRITES!

5:30 p.m. Poster Room

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Authors (*Denotes Presenter)	Abstract Title and Summary
Dutta A. Raychaudhuri D. Raghuram Mishra M. Bhattacharya A. Chakraborti R.	In-Situ Trace Elements and REE Geochemistry of Chondrites (H and L): Insights into Cosmochemical Processes [#6022] Petrochemical characterization of Dhajala (H3.8) and Khohar (L3.6) chondrites to understand their cosmochemical evolution.
Li X. Liu F. Xue Y. L. Kang J. T. An Y. J. Zhang Z. F.	Calcium Isotopic Composition of Several Chondrites [#6012] Calcium isotopic compositions of several chondrites are presented. Bigger amount of samples and no pre-treatments were processed. The three CV3 chondrites displayed a limited range of calcium isotopic compositions compared to the previous published data.
Kodolányi J. Hoppe P. Vollmer C.	A Fresh In Situ Search for Signs of ^60Fe in Primitive Chondrites [#6373] Why do initial ^60Fe/^56Fe ratios derived from in situ and bulk data differ? Was there any time or place in the early solar system where ^60Fe was more abundant than in angrite and HED parent matter? New NanoSIMS and CHILI data shall shed light on this!
Ozdemir B. Ozel M. E. Yesiltas M. Yalcin M. G.	Chemical Content of the Didim and Kemer Meteorites [#6154] Our Raman and XRF spectroscopic results of Didim and Kemer meteorites are presented.
Cato M. J. Sharp Z. D.	Bulk Hydrogen Isotopes in Ordinary Chondrites [#6495] Bulk hydrogen isotope measurements were conducted using continuous flow gas phase mass spectrometery at the University of New Mexico to better understand the average isotopic composition of the class.
Stennikov A. V. Fedulov V. S. Dushenko N. V. Naimushin S. G. Voropaev S. A.	Degassing and Volatile Content of L3 Chondrite Aba Panu [#6157] Here we present the initial results on experimental degassing during annealing of L3 S4 W0 ordinary chondrite Aba Panu. The meteor is a fall, which detonation was observed over the Nigerian state of Oyo in April, 2018.
Hublet G. Yamaguchi A. Debaille V. Shirai N. Kimura M.	Geochemical Study of Type 3 Ordinary Chondrites [#6257] This study present previous results of trace and minor element composition of type 3 Ordinary Chondrite.
Mészárosová N. Skála R.	Zinc-Bearing Iron-Dominant Member of (Fe,Zn,Mn)S Solid Solution from Eagle Enstatite Chondrite [#6308] Zinc-bearing iron-dominant member of (Fe,Zn,Mn)S solid solution from Eagle enstatite chondrite is introduced for the first time. Crystal chemistry and occurrence is presented and possible crystal structures are discussed (buseckite or rudashevkyite).
Efimov A. V. Kartashova A. P. Murtazov A. K.	Visual Spectrum of Chondrite L6 Ozerki [#6334] We measured the visual spectrum of the Ozerki meteorite L6.
Voropaev S. A. Nugmanov I. I. Dushenko N. V.	Experimental Study of Northwest Africa 12370 Meteorite’s Mechanical Properties [#6016] The study of mechanical properties of the NWA 12370 meteorite, classified as H5 W1 S2, was performed. First results concerning Young moduli and Poisson ratio are presented.
Muftakhetdinova R. F. Pastukhovich A. Yu. Yakovlev G. A. Grokhovsky V. I.	Structural Features of the Impact Melt of the Ordinary Chondrite Ozerki L6: Preliminary Data [#6159] This work presents the results of the study of the structural features in the shock-melted sample of the ordinary chondrite Ozerki L6.
Muftakhetdinova R. F. Kruglikov N. A. Grokhovsky V. I.	Mid-Infrared Microspectroscopic Study of Different Structures of Tsarev Meteorite after Shock-Wave Loading [#6371] The aim of the work is to investigate the spectral properties of Tsarev L5 ordinary chondrite after model experiments on shock-wave loading.The main feature is shifting of the olivine 886 and pyroxene 1065 peaks of different structures.
Li S.-L. Hsu W.-B.	The Relationship Between Shock-Induced Phase Transformation and Isotopic Resetting: Insights from Pb Isotopic Systematics of Phosphates in L Chondrites [#6271] The shock-induced phase transformation and Pb isotopic compositions of phosphates in two strongly shocked L6 chondrites (Suizhou and Sixiangkou) were investigated in this study in order to clarify their relationships.
Moggi Cecchi V. Pratesi G. Franza A. Greenwood R. C. Franchi I. A.	Northwest Africa 11708 and 12252 Two New Unequilibrated Chondrites from Sahara [#6461] Textural and minerochemical features of two new unequilibrated chondrites (Northwest Africa 11708 and 12252) from western Sahara are provided. A classification as CK3 for the first one and as H3 for the second is proposed.
Ji J. L. Hu S. Lin Y. T. Zhou Q. Xiao Y. Imae N. Kimura M.	Shock Metamorphism of the New Fall Ordinary Chondrite Mangui in China [#6285] The Mangui meteorite (L6, S5) is the newest meteorite fall in China. Two high pressure polymorphs, jadeite and majorite, recrystallized from melt possibly. The parent body of Mangui experienced strong shock metamorphism.
Pourkhorsandi H. Debaille V. Armytage R. M. G. van Ginneken M. Rochette P. Gattacceca J.	The Effects of Terrestrial Weathering on Samarium-Neodymium Isotopic Composition of Chondrites [#6274] In this study we aim to systematically evaluate the effects of terrestrial weathering on REE elemental and Sm-Nd isotopic composition of ordinary chondrites from the Antarctic cold desert and Atacama (Chile) and Lut (Iran) hot deserts.
Dos Santos E. Scorzelli R. B. Gattacceca J. Rochette P. Valenzuela M. Letichevsky S. Avillez R. R.	Weathering of Ordinary Chondrites from Atacama Desert — A New Dataset [#6327] In this paper we studied weathering of ordinary chondrites from the Atacama Desert using ^57Fe Mössbauer spectroscopy.The Mössbauer data will be combined with results from other techniques.
Savchenko S. S. Vokhmintsev A. S. Weinstein I. A.	UV Excited Luminescence of Chelyabinsk LL5 Chondrite Silicates in 7–340 K Temperature Range [#6478] The work aimed at studying the spectral and temperature features of the photoluminescence behavior of individual silicate grains from Chelyabinsk chondrite in the range of 7–340 K.
Maksimova A. A. Chukin A. V. Petrova E. V. Oshtrakh M. I.	Variability in the Phase Composition in Chelyabinsk LL5 Fragments with Different Lithologies: Study Using X-Ray Diffraction and Mössbauer Spectroscopy [#6504] Five fragments of Chelyabinsk LL5 ordinary chondrite with different lithologies were studied by means of X-ray diffraction and Mössbauer spectroscopy. The results demonstrated some variations in the phase composition for different fragments.
Sharygin V. V.	Nickel-Rich Metal-Sulfide Globules in Fusion Crust of Chelyabinsk Meteorite [#6363] Metal-sulfide globules in the fusion crust of the Chelyabinsk meteorite are Ni-rich and contain heazlewoodite, nickel, awaruite, pentlandite, godlevskite, Os-Ir-Pt phase and other Ni-poorer phases.
Brusnitsyna E. V. Grokhovsky V. I. Yakovlev G. A. Muftakhetdinova R. F.	The Structure of Metal Particles in the Light Lithology of Chelyabinsk Meteorite [#6328] The fragments with light lithology of Chelyabinsk meteorite are of particular interest since they more closely correspond to the original substance of the parent body.The metal part of this body was cooled at a rate of about 5°C/Myr years below 400°?.
Vokhmintsev A. S. Savchenko S. S. Martemyanov N. A. Weinstein I. A.	Microphotoluminescence Study of Chelyabinsk LL5 Chondrite [#6312] This work deals with the investigation of photoluminescence properties of the Chelyabinsk LL5 chondrite with microscale spatial resolution and comparative analysis of the data obtained with the results of scanning electron microscopy study.
Maksimova A. A. Petrova E. V. Chukin A. V. Oshtrakh M. I.	Fe^2+ Occupancies in the M1 and M2 Sites in Silicate Crystals in Chelyabinsk LL5 Fragments with Different Lithologies Analyzed Using X-Ray Diffraction and Mössbauer Spectroscopy [#6505] The Fe^2+ occupancies of the M1 and M2 sites in olivine, orthopyroxene and clinopyroxene in Chelyabinsk LL5 meteorite fragments were studied by X-ray diffraction and Mössbauer spectroscopy.
Danilenko I. A. Petrova E. V. Yakovlev G. A. Grokhovsky V. I.	Experimental Modelling of the Thermal Effect on Chelyabinsk Meteorite [#6187] The heating experiments with the light lithology of Chelyabinsk LL5 chondrite were performed at the temperatures 700–1500°C. As it was shown by optical and electron microscopy, the structures obtained have not found yet among the studied samples.
Oshtrakh M. I. Maksimova A. A. Chukin A. V. Petrova E. V.	Study of the Fusion Crust in Chelyabinsk LL5 Fragments Using X-Ray Diffraction and Mössbauer Spectroscopy [#6507] Comparison of the fusion crust from two different Chelyabinsk LL5 fragments was carried out using X-ray diffraction and Mössbauer spectroscopy.
Beard S. P. Swindle T. D. Kring D. A. Lapen T. J.	Impact Chronology of Chelyabinsk [#6230] Many chronometric systems have been used to study Chelyabinsk, which result in multiple different ages. This work tries to better understand the different ages and synthesize them into a coherent history.

Thursday, July 11, 2019

POSTER SESSION: CARBONACEOUS CHONDRITES: COMPONENTS, POST-ACCRETION HISTORIES, AND CLASSIFICATION

5:30 p.m. Poster Room

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Authors (*Denotes Presenter)	Abstract Title and Summary
Dai D. Liu S. Bao H.	Oxygen Isotopic Compositions of W-L Rim in Two CAIs from Kainsaz CO3 Carbonaceous Chondrites [#6191] We report the results of O isotopes in W-L rims of two CAIs from the Kainsaz (CO3) carbonaceous meteorites.
Iemoto A. Seto Y. Miyake A.	Mineralogical Study of TCIs in CM Carbonaceous Chondrites and Implications to the Formation Processes [#6251] We report microtextures of tochilinite-cronstedtite intergrowths (TCIs) in five CM chondrites using an SEM-EDX, FIB and STEM-EDX. Our results indicates the possibility that type-II TCIs were formed from fluid solution on the parent bodies.
Panda D. K. Ray D. Shukla A. D.	Merrilite Rim Around the Phyllosilicate Clast in Mukundpura Carbonecous Chondrite (CM2) Meteorite [#6420] CM2 type of meteorites has been investigated for understanding the aqueous alteration processes. In this study Mukundpura, a CM2 type has been studied to understand the formation of phosphate mineral using SEM and EPMA analysis.
Wickland T. D. Telus M. Liu M. -C.	Petrologic Characterization and In-Situ ^60Fe-^60Ni Systematics of CO3 Chondrites [#6448] Using secondary ion mass spectrometry, we measured Ni isotopes in CO3.0 chondritic magnetite to better understand ^60Fe/^56Fe of the early solar system. We did not find excess ^60Ni and our conservative upper constraint on the initial ratio is 9.6e-8.
Ivanova M. A. Ma C. Lorenz C. A. Franchi I. A. Kononkova N. N.	A New Unusual Bencubbinite (CBa), Sierra Gorda 013, with Unique V-Rich Sulfides [#6149] Here we present preliminary results of study of unusual CB chondrite from Chile, Sierra Gorda (SG) 013, and de-scribe V-rich sulfides which have not previously been found in the meteorite material.
Yokoyama S. T. Tait K. T. Di Cecco V. E. Hyde B. C.	Determination of Petrologic Subtypes of CV3 Chondrites by Raman Spectroscopy [#6450] We analyze 17 CV3 chondrites from the Royal Ontario Museum (Toronto, Canada) and the National Institute of Polar Research (Tokyo, Japan) using Raman spectroscopy and determine each sample’s petrologic subtype (e.g. 3.x).
Lentfort S. Bischoff A. Ebert S.	Classification of 13 CM Chondrite Breccias and CM Clasts in Two Achondrites [#6029] CM chondrites are complex impact (mostly regolith) breccias, in which lithic clasts show various degrees of aqueous alteration. They should be classified in the same way as ordinary chondrite breccias (Cold Bokkeveld as an example:  CM2.0-2.8).
Liu Y. Fang T.	The Tl Content and Tl Isotope Composition Constraints on the Magnitude of Late-Accretion of Earth and Meteorite Type [#6235] It needs more chondritic materials, especially CC and EC to satisfy the requirements of BSE’s Tl conten. The amount of 0.5 wt.% late veneer estimated by HSEs is not enough to explain the Tl content in BSE. It needs at least 5 more times of materials.
Zolensky M. Buchanan P. Le L. Ross D. K. Martinez J.	Unusual Tiny Objects in Your HED [#6078] Reexamination of tiny chondritic lithologies in HED meteorites.
Natrajan Shreeya. Ms. Marhas K. K. Dr.	Thermal Alteration of Meteorite Parent Body as Recorded by Insoluble Organic Matter: XANES and Raman Study [#6407] To study the thermal evolution of meteorite parent body by performing C-XANES and Laser Raman analysis of Insoluble Organic Matter (IOM).
Abe D. Mikouchi T.	Mineralogical Comparison of Northwest Africa 7317 and Tafassasset: Two Equilibrated Rocks Related to CR Chondrites [#6130] We studied two highly-equilibrated CR-related meteorites NWA 7317 (CR6) and Tafassasset. We found their mineral compositions are distinct, implying different source compositions and Tafassasset is more “unequilibrated” in texture and mineralogy.
Ibrahim M. I. Ciceri F. Hildebrand A. R.	Elastic Properties of the Tagish Lake Fall (C2, Ungrouped) [#6472] The elastic waves in Tagish Lake are slow (1240 m/sec) reflecting it’s high porosity and hydrated mineralogy. This contrasts with CM-chondrite which range from 1500 to 2500 m/sec. Slabbing Tagish Lake reveals breccia textures.
Floyd C. Lee M. R.	Parent Body/Terrestrial Alteration of Fe,Ni Metal in Carbonaceous and Ordinary Chondrites: Implications for Sample Return [#6071] Fe,Ni metal grains in Antarctic CM carbonaceous chondrites have multilayered akaganeite/goethite/tochilinite rims. How is parent body and terrestrial alteration distinguished?
Nakato A. Brearley A. J. Nakamura T. Noguchi T. Kebukawa Y. Lee J. I. Matsuoka M. Sasaki S. Shirai N.	Thermal History of Carbonaceous Chondrite Pecora Escarpment 02012 [#6245] Thermally metamorphosed carbonaceous chondrites (TMCCs) are plausible candidate for Ryugu materials. We report additional observation of PCA 02012, a unique TMCC having olivine, pyroxene, plagioclase instead of phyllosilicate in the matrix.

Thursday, July 11, 2019

POSTER SESSION: MICROANALYSIS OF EXTRATERRESTRIAL SAMPLES AND DEVELOPMENTS IN ADVANCED TECHNIQUES

5:30 p.m. Poster Room

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Authors (*Denotes Presenter)	Abstract Title and Summary
Schrader D. L. Zega T. J.	Determining the Geothermometry of a Hayabusa-Returned Sulfide Particle [#6400] We determined the geothermometry of a pyrrhotite-pentlandite bearing Hayabusa-returned particle.
Matsumoto T. Miyake A. Harries D. Noguchi T. Langenhorst F.	Shock Melting Features in Regolith Particles of S-Type Asteroid Itokawa [#6213] We examined shock veins and a large impact splash melt in Itokawa samples, which include silicate melts with np FeS and iron sulfide melts depleted in sulfur. These melts could be important for space weathering and volatile loss on S-type asteroid.
Zennouri L. Chennaoui Aoudjehane H.	Fusion Crusts of Recent Moroccan Falls: Towards the Identification of Ablation Spherules Among Cosmic Spherules [#6421] In our work, we aim to explore the relationship between the micrometeorites and meteorites fusion crusts, focusing on recent ordinary chondrite falls in Morocco.
Burgess K. D. Stroud R. M.	Space Weathering of Adjacent Phases in Single Grains from Itokawa [#6484] Nanoscale analysis of space weathering features in grains returned from asteroid Itokawa reveals different behaviors for different phases in the same grain. Vesicles in high-Ca pyroxene rims are explored for the presence of volatiles.
Glukhov M. S. Sungatullin R. Kh. Kadyrov R. I. Galiullin B. M. Statsenko E. O.	Cosmic Dust in Permian Evaporites [#6048] We studied structure, chemical and mineral composition of 43 microspheres from Permian evaporites. All microspheres have a diameter of 5–150 μm, ideal spherical shape and a strong metallic luster. The main elements of the microspheres are Fe and O.
De Gregorio B. T. Opsahl-Ong J. Chizmadia L. Brintlinger T. D. Stroud R. M.	Computer-Assisted Detection of Interstellar Dust Impacts in Stardust Foils [#6464] We developed a crater searching algorithm that detects morphological features of sub-micron impact craters in spacecraft Al foil. We found 28 craters across 10 Stardust interstellar foils, most of which were concentrated on two adjacent foils.
Folco L. Suttle M. D.	Particle Statistics from the TAM Micrometeorite Collection — Investigating the Relationship Between Cosmic Spherule Texture and Particle Size [#6409] We provide a comprehensive overview of micrometeorite statistics from the TAM micrometeorite collection. This includes the first data on micrometeorite size distribution by textural subtype and unmelted micrometeorite abundances.
Mizuho N. Akira T. Hajime Y. Hikaru Y. Kyoko O. Junya M. Masaaki U. Kentaro U. Tsukasa N. Takaaki N. Hajime M. Akihiko Y.	Structure Analysis of the Hyper Velocity Impact Tracks of the Particles Captured by Silica Aerogels on the International Space Station [#6335] We analyzed impact tracks of the particles captured by silica aerogels on the International Space Station. Three-dimensional morphologies for impact tracks using absorption tomography were classified into 5 types and compared with Stardust tracks.
Nava J. Suttle M. D. Spiess R. Folco L. Najorka J. Carli C. Massironi M.	Hydrothermal Activity on the CV Parent Body: New Perspectives from the Unique CV-Like TAM5.29 Micrometeorite [#6169] We provide a detailed characterisation of the first well-documented CV-like micrometeorite, expanding knowledge in the compositional range of micrometeorites and in the thermal metamorphism and hydrothermal history of the CV parent body-(ies).
Soens B. Villeneuve J. van Ginneken M. Debaille V. Vanhaecke F. Claeys Ph. Goderis S.	Achondritic Cosmic Spherules from the Sør Rondane Mountains, East Antarctica: Probing the Asteroid Belt Beyond the Meteorite Inventory [#6150] We present major, trace element and triple-oxygen isotopic data for 5 achondritic cosmic spherules from the Sør Rondane Mountains, East Antarctica. We argue that some of these particles may represent new types of planetary materials.
Maupin R. Djouadi Z. Brunetto R. Lantz C. Mivumbi O.	Vis-NIR Reflectance Micro-Spectroscopy of IDPs [#6162] We present IDPs visible near infrared (Vis-NIR) reflectance spectra and discuss them on the basis of mid infrared (Mid-IR) results.
Enju S. Kawano H. Tsuchiyama A. Kim T. Takigawa A. Matsuno J. Komaki H.	Synthesis of GEMS in the System Fe-Mg-Si-O-S with Change in Redox Condition [#6133] Synthetic experiments using induction thermal plasma systems are performed in the system Fe-Mg-Si-O-S, with the systematic change in redox condition, to understand the GEMS forming condition.
Sungatullin R. Kh. Sungatullina G. M. Balabanov Yu. P. Glukhov M. S. Kosareva L. R. Bakhtin A. I. Gusev A. V. Kuzina D. M.	Cosmic Microspheres at Boundary of the Kungurian Stage [#6431] In paper described possibilities of using micrometeorites for distinguishing event-related stratigraphic levels of a global, regional, and local scale.
Sungatullina G. M. Sungatullin R. Kh. Glukhov M. S. Bakhtin A. I. Gusev A. V. Kuzina D. M.	Space Events and Evolution of the Conodonts [#6444] In paper we describe possible connection of the conodonts development with the amount of space dust entering the Earth.
Kuzina D. M. Iusupova A. R. Nurgaliev D. K. Vorob’ev V. V. Osin Yu. N.	Extraterrestrial Matter from Lake Bolshoe Miassovo, South Ural, Russia [#6471] In this paper we describe scanning electron microscopy results of magnetic fraction of Lake Bolshoe Miasso-vo (Chelyabinsk region, Russia). It is shown that lake sediments are good archives for extraterrestrial matter.
Imae N. Kimura M.	X-Ray Diffractions of Stony Meteorites Using the Gandolfi Attachment [#6086] The XRD at NIPR was applied to micro XRD, combining with the polycapillary unit and the Gandolfi attachment. We show that the technique in air is convenient for the rapid characterization of tiny stony meteorites.
Kuzina D. M. Nurgaliev D. K. Pechersky D. M.	Estimation of Fe-Ni Matter Flux to the Earth Based on Magnetic Investigation [#6488] The paper shows the possibility of using magnetic methods to estimate the amount of incoming cosmic matter on example of studying samples from Atlantic Ocean and Lake Baikal.
Krivenko A. P. Martynov L. Yu. Voropaev S. A.	Experimental Installation for Investigation of Mechanical Properties of Meteorites [#6176] Industrial facilities for researching mechanical properties of meteorites need samples at least 25 x 50 mm. We have designed special installation for evaluation such elastic mechanical values as Poisson`s ratio, Young`s modulus, and tensile strength.
Brown E. C. Donaldson Hanna K. L. Bowles N. E. Hamilton V. E. Clark B. E. Rogers A. D. Lauretta D. S. the OSIRIS-REx Team	Comparing Thermal Infrared Spectral Unmixing Algorithms: Applications to Bennu and Other Airless Bodies [#6201] We present a Bayesian approach to spectral unmixing algorithms in the thermal infrared (TIR), and compare this to more commonly used methods (e.g., linear least squares). Comparisons are made using a subset of the OSIRIS-REx TIR blind test data.
Brenker F. E. Vincze L. Vekemans B. de Pauw E. Tkalcec B. Falkenberg G.	Fast Trace Element Tomography and WDX REE Pattern Measurement of Pristine Asteroidal Sample Material [#6338] A novel wavelength-dispersive detection method for synchrotron X-ray fluorescence spectroscopy is presented optimized specifically for the detection of REE L-lines. The new plate detector geometry yields lower DL and faster acquisation times.
Ogliore R. C.	Acquisition and Display of Ultra High-Resolution Backscattered Electron Images of Meteorite Thin Sections [#6437] I present a method to acquire and display multi-gigapixel backscattered electron images of meteorite sections.
Daly L. Lee M. R. Macente A. Halpin J. McFadzean S. Smith W. Einsle J. E. Ball M. R. Miyake A. Matsuno J. Matsumoto M. Tsuchiyama A.	Combining Focused Ion Beam and Synchrotron Tomography to Identify Fluid Pathways in Heated CM Chondrites with Implications for Ryugu and Bennu [#6262] Holes fractures and flow / Through 3D tomography / Water where you go!
Yasutake M. Miyake A. Mikouchi T. Tsuchiyama A.	Notice on the EBSD Analysis of Olivine in Meteorites [#6093] The recent advance of EBSD technique enables us to better understand the formation history of meteorites. Olivine is the most common mineral among meteorites and it is a good indicator. Here we make a short notice on the EBSD analysis of olivine.
Terada K. Sato A. Ninomiya K. Kawashima Y. Shimomura K. Tomono D. Kawai Y. Osawa T. Tachibana S.	Development on Non-Destructive Muonic X-Ray Analysis of Carbonaceous Chondrites: Feasibility Test for Returned Samples from C-Type Asteroids [#6121] We report the first non-destructive elemental analysis of a carbonaceous chondrite using one of the world-leading intense direct current Muon beam source.
Telus M. Hertwig A. T. Liu M. C.	Development of U-Pb SIMS Analysis of Apatite in Ordinary Chondrites [#6247] We describe our SIMS technique for U-Pb systematics of apatite, present preliminary results and discuss our plans for the future method development.
Anderson F. S. Alexander A. Crow C. Whitaker T. J. Levine J.	Improved Precision for the Chemistry and Dating Experiment Using FS-Laser Ablation [#6501] We have made new measurements of the Zagami meteorite using fs-laser ablation that improves the results of the in-situ chronology instrument CDEX by ~5X, resulting in a Rb-Sr date of 191 ± 56 Ma.
Fukuda K. Beard B. L. Spicuzza M. J. Kita N. T.	Magnesium Isotope Analysis of Olivine by SIMS: Calibration of Matrix Effects [#6204] An instrumental bias correction for SIMS Mg isotope analysis of olivine can be constrained by using a combination of ionization yields and Mg contents.
Isono Y. Sakamoto N. Ishibashi A. Song J. Yurimoto H.	Development of Sample Preparation Technique for Isotope Analysis of Fluid Inclusions by SIMS [#6310] Cryogenic sample preparation techniques for secondary ion mass spectrometry were developed to expose fluid inclusions on the flat sample surface for oxygen and hydrogen isotope analysis.
Welzenbach L. C. Fries M. D. Grady M. M. Greenwood R. C. McCubbin F. M. Smith C. L. Steele A. Zeigler R. A.	Potential Alteration Products of Organic Materials by X-Ray Computed Tomography of Mars Returned Samples [#6369] X-ray Computed Tomography (XCT) may alter organics in Mars returned samples. A preliminary XCT scan of a Mars 2020 cache filled with Mars-like simulant and organics shows visible material changes compared with a control.
Wolters C. Vuitton V. Orthous-Daunay F.-R. Flandinet L. He C. Moran S. Hörst S. Bekaert D. Tissandier L. Marty B. Piani L.	Liquid Chromatography Orbitrap Mass Spectrometry Study of Synthetic and Chondritic Organic Mixtures [#6186] Liquid chromatography Orbitrap mass spectrometry is used to compare extraterrestrial and synthetic organic matter. This analytical workflow brings information on the origin of the soluble organic matter present in carbonaceous chondrites.
Naraoka H. Takano Y. Dworkin J. P. Analysis Team SOM.	Soluble Organic Matter (SOM) Analysis Plan of the Hayabusa2-Returned Samples [#6314] In order to investigate the organic evolution of Ryugu, an international team is organized for the initial SOM analysis for the Hayabusa2-returned samples. We propose the comprehensive SOM analyses using high-sensitive and high-resolution methods.
Mitchell J. L. Lewis E. K. Zeigler R. A. McCubbin F. M. Fisher K. R. Fries M. D.	Recent Developments in the Curation of Cold, Volatile-Rich Extraterrestrial Samples [#6040] Preparations for the curation of cold, volatile-rich samples are underway. This abstract describes that work and the various sample types/analyses that will be supported as a result of these current efforts.
Fries M. McCubbin F. Zeigler R. A. Barnes J. Burton A. Harrington A. Landis R. Mitchell J. Niles P. Righter K. Regberg A. B. Zolensky M. Slisher T. Herd C. D. K. Harrington R. Haney N. Archer D. Hogencamp J. Wilbur Z. Welzenbach L. Steele A.	Simulation of a Cold Curation Preliminary Examination Using a Cold Hamburg Meteorite [#6499] A meteorite from the Hamburg, MI meteorite fall was recovered from a frozen lake and has been kept frozen since then. We are utilizing it for a simulated Curation Preliminary Examination as though it were from a cold sample return mission.
Yoshitake M. Ohnishi I. Nakato A. Yurimoto H.	Preliminary Results of Sample Preparation of Ultra-Thin Film by Using Focused Ion Beam Technique for Extraterrestrial Materials in JAXA [#6231] We installed a FIB instrument at ESCuC of JAXA and started to construct the procedure of ultra-thin film sample preparation of extraterrestrial materials for TEM. The ultra-thin films made by the new FIB are enough thin for observation by TEM.
Welzenbach L. C. Wilbur Z. E. Fries M. D.	Cold Curation Techniques: X-Ray Computed Tomography of the Hamburg Meteorite [#6496] The first cryo X-ray tomography scan of a cold collected meteorite.
Grady M. M. Meyer M. A. Sefton-Nash E. Beaty D. W. Carrier B. L. Bass D. Gaubert F. Haltigin T. Harrington A. D. Liu Y. Marty B. Mattingly R. Siljeström S. Stansbery E. Tait K. Wadhwa M. White L. MSR Science Planning Group (MSPG)	Laying the Groundwork: Advance Planning in Preparation for Scientific Analysis of Samples Returned from Mars [#6432] MSPG has a brief to ensure that planning activities by NASA and ESA for MSR are co-ordinated and consistent. MSPG is identifying issues of concern and proposing mechanisms through which the science objectives of MSR might be achieved.
Cowden T. R. Snead C. J. Jang J. H. McCubbin F. M.	Meca500 Robotic Arm Developments Towards Astromaterials Curation Applications [#6364] Micromanipulation of astromaterials in a curation setting can be made easier by the implementation of robotic control systems. Current systems are limited in the range and area of motion, but we have had some success with an industrial robotic arm.

Thursday, July 11, 2019

POSTER SESSION: NON-CARBONACEOUS CHONDRITES: COMPONENTS, POST-ACCRETION HISTORIES, AND CLASSIFICATION

5:30 p.m. Poster Room

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Authors (*Denotes Presenter)	Abstract Title and Summary
Hashimoto Y. Nakamura T. Matsumoto M.	Multi-Layer Fine-Grained Rim Around Chondrule in the Yamato 75273 LL3 Chondrite: Nebular and Parent-Body Processes [#6219] We found a multi-layered fine-grained rim in the Y-75273 LL3 chondrite. Based on mineralogical observation, we conclude that five-layer fine-grained rim was formed by both nebular and parent-body processes.
Wach R. A. Szurgot M. Unsalan O. Altunayar-Unsalan C.	Specific Heat, Mean Atomic Weight and Relict Temperatures of Bursa L6 Chondrite [#6024] The aim of the paper was to measure specific heat capacity of Bursa meteorite at various temperatures, to measure grain density, determine relict temperatures, troilite content, mean atomic weight, and mean atomic heat of this L6 chondrite.
Maeda R. Goderis S. Debaille V. Hublet G. Pourkhorsandi H. Claeys P.	Rare Earth Element Distribution and Lu-Hf and Sm-Nd Isotope Systematics in Antarctic H Chondrites [#6289] In this study, ten Antarctic H chondrites and three H chondrites obtained from hot deserts are investigated for their rare earth element distribution and subsequently analyzed for bulk elemental compositions and Lu-Hf and Sm-Nd isotope systems.
Okazaki R. Harada M. Yogata K.	In-Situ K-Ar Dating of Rock Samples by a Combination of Laser-Induced Breakdown Spectroscopy (LIBS) and Noble-Gas Mass Spectrometry [#6127] We have developed a measurement system consisting of noble-gas mass spectrometry and plasma-emission spectroscopy for in-situ K-Ar dating. We have determined K-Ar ages of lithic clasts, chondrules, and matrix in a brecciated H-chondrite.
Almeida N. V. Schofield P. F. Geraki K. Russell S. S.	Relict Forsterite in Unequilibrated Enstatite Chondrites [#6322] Enstatite chondrites are notable for their reduced mineralogy, however their components may record an evolving nebular composition. Thus, we are using cathodoluminescence, synchrotron XRF and Ti-XANES to investigate relict forsterite in chondrules.

Thursday, July 11, 2019

POSTER SESSION: ORGANIC MATTER IN METEORITES

5:30 p.m. Poster Room

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Authors (*Denotes Presenter)	Abstract Title and Summary
Phan V. T.H. Quirico E. Beck P. Carrasco N. Gautier T. Jovanovic L. Raya J. Le Brech Y. Le Guillou C.	FTIR Quantification of the Functional C Groups in Coals and Extraterrestrial Kerogens: A Calibration Procedure [#6253] We will present the whole calibration procedure and applications to the quantification of the functional C groups for coal and meteoritic kerogen samples using simple polymers and synthetic polyaromatic materials.
Kato H. Yabuta H.	Polycyclic Aromatic Hydrocarbons and Aliphatic Hydrocarbons in Jbilet Winselwan Carbonaceous CM Chondrite, a Possible Analog of Asteroid Ryugu’s Surface [#6353] PAHs and aliphatic hydrocarbons were quantified from Jbilet Winselwan meteorite, whose reflectance spectrum is similar to the surface of asteroid Ryugu. Their molecular compositions indicate a mild degree of the parent body thermal metamorphism.
Bodnar R. J. Dolocan A. Zolensky M. Lamadrid H. Kebukawa Y. Chan Q. Rahman Z.	Organic Compounds in Early Solar System Aqueous Fluids [#6064] Aqueous fluid inclusions in early solar system halite contain abundant organics.
Kiryu K. Kebukawa Y. Igisu M. Shibuya T. Kobayashi K.	Kinetic Estimation of the Thermal Hisrory of Organic Matter in Chondrites Using Raman Spectroscopy [#6250] We performed a series of heating experiments of the Murchison meteorite powders in order to establish kinetic approaches for the thermal history of organic matter in chondrites using Raman spectroscopy.
Sandford S. A. Nuevo M. Cooper G.	Sugars and Related Compounds: Comparisons Between Meteorites and the Residues Produced from the UV Irradiation of Astrophysical Ice Analogs [#6006] We describe comparisons between the sugars and sugar-related compounds found in meteorites and in the organic laboratory residues made during the irradiation of astrophysical ice analogs.
Nava J. Maturilli A. Zambon F. Carli C. Alemanno G. Helbert J. Genovesi S. Massironi M.	Cryovolcanic Laboratory Experiments on Carbonaceous Chondrites [#6173] Cryovolcanic processes and related products are still not well understood. For this reason we made some experiments in laboratory with carbonaceous chondrites mixed with ices to try to recreate a cryovolcanic process.
Koga T. McLain H. L. Aponte J. C. Parker E. T. Elsila J. E. Dworkin J. P. Glavin D. P. Naraoka H.	Hydroxy Amino Acids in Carbonaceous Chondrites [#6414] We developed a new gas chromatography–mass spectrometry method to detect and quantify structural isomers and enantiomers of C3 and C4 Hydroxy amino acids in carbonaceous chondrites, which have differing petrology and mineralogy.
Hirakawa N. Kebukawa Y. Kobayashi K. Nakano H.	Interaction Between Organic Matter and Minerals in the Meteorite Parent Bodies During Thermal Processes [#6145] Chemical structures and compositions of organics in meteorites reflect the physicochemical processes in the parent bodies. We conducted heating experiments of organics with/without minerals to evaluate the effects of minerals on changes in organics.

Thursday, July 11, 2019

POSTER SESSION: REFRACTORY INCLUSIONS

5:30 p.m. Poster Room

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Authors (*Denotes Presenter)	Abstract Title and Summary
Suzumura A. Seto Y. Itoh S.	Petrographic Study of a Compact Type A CAI with Partial Melting Process [#6329] Chemicalcompositionhemical compositions and isotopic compositions in CTAs may change due to partial melting. it is necessary to refer to the formation processes of CTAs from the perspective of crystal growth in partial melting states.
Ebert S. Bischoff A. Krot A. N.	(Na-)Al-Rich Chondrules and Ca,Al-Rich Inclusions from Unequilibrated Ordinary Chondrites [#6138] SEM and EDX investigations of 50 Al-rich chondrules (20 are Na-rich), 14 CAIs, and 2 AOAs from the unequilibrated ordinary chondrites. Oxygen and Al-Mg studies of the (Na-)Al-rich chondrules and the refractory inclusions are in progress.
Ebert S. Patzek M. Shollenberger Q. R. Bischoff A. Brennecka G. A.	Rare Earth Elements and O-Al-Mg Isotope Systematics from a >200 µm Corundum Grain in a CAI of the CK3 Chondrite Northwest Africa 4964 [#6018] We present a very large (>200 µm) corundum grain from a CAI of the CK chondrite NWA 4964 which was investigated by measuring its chemical compositions, including rare earth elements contents, and the O and Al-Mg isotope systematics.
Zhang M. Lin Y. Tang G. Leya I.	Formation of the Flowed Core in a Leoville Type B CAI: Plastic Deformation or Hot Accretion? [#6389] We described a Leoville Type B1 CAI with a flowed core, where the WL rim material and chondrite matrix were involved inside the CAI interior. Its formation may be explained by plastic deformation or hot accretion processes.
Mane P. Nguyen A. N. Barnes J. J. Needham A. W. Messenger S. Ross D. K. Simon J. I.	Oxygen Isotopic Imaging of a Hibonite-Grossite-Rich Inclusion from the Miller Range (MIL) 090019 CO3 Chondrite [#6492] The NanoSIMS ion imaging studies of a hibonite-grossite-rich CAI from the MIL 090019 CO3 chondrite record variations in O-isotopic compositions suggesting different CAI minerals likely recorded distinct nebularenvisornments as the CAI formed.
Han J. Ohnishi I. Keller L. P.	Complex Intergrowths of Non-Stoichiometric Defect-Structured Hibonite and Al-Rich Spinel in an Allende Ca-Al-Rich Inclusion [#6487] Atomic scale TEM images of hibonite in the Allende CAI provide direct information about the crystal structure and chemistry of defect-structured hibonite and Al-spinel intergrowths in the context of the formation of first solids in the solar nebula.
Aléon-Toppani A. Aléon J. Brisset F.	Fine-Grained CAIs at the Nanometer Scale: Discovery of a Pristine Aggregate of Sub-μm Condensates [#6077] Here we report the discovery and the TEM mineralogical characterization of a very pristine fine-grained CAI E045-V from Efremovka which core is composed of unmodified nanometric condensates.
Ishikubo S. Tachibana S. Kawasaki N. Yamamoto D. Kuroda M. Yurimoto H.	Effect of Water Fugacity for Oxygen Self Diffusion in Gehlenite [#6139] Oxygen self-diffusion experiments in gehlenite at protoplanetary disk-like water vapor pressures (0.01–1 Pa) show that oxygen self-diffusion in gehlenite is not enhanced by water vapor at 800–900°C.
Shornikov S. I. Yakovlev O. I.	Mass Spectrometric Study of Perovskite Evaporation from Knudsen Cell [#6005] We presented the experimental data on evaporation of perovskite and the CaO-TiO2 melts at high temperatures.
Tachibana S. Kamizuka T. Hirota T. Sakai N. Oya Y. Takigawa A. Yamamoto S.	Spatial Distribution of Aluminum Monoxide Molecules in a High Mass Protostar Candidate Orion Source I [#6350] Aluminum monoxide (AlO) emission lines are observed in the base of outflow of Orion Source I, a high-mass protostar candidate, with ALMA for the first time in star forming regions. The limited distribution of AlO indicates its recondensation as dust.

Thursday, July 11, 2019

POSTER SESSION: SURFACE PROCESSES ON AIRLESS BODIES

5:30 p.m. Poster Room

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Authors (*Denotes Presenter)	Abstract Title and Summary
Chaves L. C. Thompson M. S. Loeffler M. J.	Understanding the Role of Sulfides in the Space Weathering of Asteroidal Regoliths [#6404] In this study, we analyzed the space weathering effects on Fe- Fe-Ni sulfide phases from the CM2 Murchison meteorite by simulating micrometeorite impacts using pulsed-laser irradiation.
Kruglikov N. A. Muftakhetdinova R. F. Grokhovsky V. I.	Visible Range Spectroscopy of Shock-Wave Loaded Chelyabinsk LL5 [#6447] Experiments were made on bulk samples obtained from fragments with different lithologies. Light lithology sample was shock-wave loaded. Another one was annealed up to 1100C. Slope of the spectrum strongly depends on the structure and the treatment.
Kebukawa Y. Koga M. Sakon I. Endo I. Kobayashi K. Matsuoka M. Ito M. Zolensky M. E. Alexander C. M. O’D. Mita H. Yano H.	Space Exposure Experiments of Carbonaceous Chondrites, Chondritic Organic Matter and its Analogues in TanpopO2, Astrobiology Space Mission on ISS [#6160] The TanpopO2 mission is going to be launched in the summer of 2019. Modifications of organic matter in space environments will be evaluated to understand dust surface processes and asteroidal surface processes.
Hicks L. J. Bridges J. C. Noguchi T. Miyake A. Piercy J. D. Hogan A.	Analysis of Space Weathered Itokawa Grains Using FE-K XANES and TEM [#6330] TEM and Fe K XANES analyses of Itokawa olivine and pyroxene at I14 Diamond, reveal an increase in ferric iron in space weathered rims. The rims are largely amorphous but with some np Fe particles.
Kruglikov N. A. Muftakhetdinova R. F. Grokhovsky V. I.	Hyperspectral Imaging of Meteorites [#6474] Hyperspectral imaging is a very new area for meteorites investigations. Using the camera one obtain information about the spectrum of the object in every pixel. We have used the Specim IQ push broom scanner for a different kind of meteorites imaging.
Klima R. L. Young B. Rivkin A. S.	Integrating Crystal Chemistry with Laboratory Analysis to Model Bound and Adsorbed OH- and H2O [#6396] We investigate and model the H2O/OH- absorptions near 3 microns in lunar analogs and ordinary chondrites to determine limitations on understanding how these molecules are adhered to a remotely observed surface and assessing their abundance.

Thursday, July 11, 2019

POSTER SESSION: 1969: THE YEAR OF JAPANESE ANTARCTIC METEORITES, APOLLO 11, MURCHISON, AND ALLENDE

5:30 p.m. Poster Room

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Authors (*Denotes Presenter)	Abstract Title and Summary
Zhang A. C. Fernandes V. A. Hoefnageles B.	Shock Metamorphism of the New Basaltic Lunar Meteorite Northwest Africa 12008 [#6117] This abstract reports the shock metamorphism of a new basaltic lunar meteorite NWA 12008.
Yang J. Lin Y. T. Joy K. H. Chen B.	The Petrogenesis of Very Low-Ti Mare Basaltic Clasts in Lunar Meteorite Dhofar 1442 [#6258] Two very low-Ti mare basaltic clasts in Dhofar 1442 section show positive Eu-anomalies. We discussed the source regions of these two basaltic clasts and the role of KREEP for the evolution of parent magmas of Dhofar 1442 VLT basalts.
Wang N. Tartèse R. Joy K. H. Pernet-Fisher J. F. Lin Y. T.	Infrared Spectroscopic Characteristics of Zircon in Lunar Meteorites Northwest Africa 2995 and 4485 [#6390] We investigated the infrared spectroscopic characteristics of zircon in lunar meteorites NWA 2995 and 4485. The results show that FTIR is a useful method to distinguish different degrees of metamorphism and metamictization.
Szurgot M.	Relationship Between Mean Atomic Weight and Iron to Silicon Ratio for Lunar Materials [#6001] Relationship between mean atomic weight and iron to silicon ratio for lunar surface matter was discovered,and mean atomic weight of lunar crust, lunar meteorites,and Apollo samples predicted.
Moromoto N. Kawai Y. Yokota S. Terada K. Miyahara M. Takahata N. Sano Y.	Uranium-Lead Systematics of Lunar Basaltic Meteorite Northwest Africa 2977 [#6249] NWA 2977 is a lunar basaltic meteorite found in 2005, which is identified as an olivine cumulate gabbro. In this study, we report the U-Pb systematics of NWA 2977 using an ion microprobe.
Kato T. Miura Y.	Global Imcomplete Formation of Lunar Minerals Without Successive Fluid System [#6502] Analytical evidences of the lunar rock formation can be discussed by mineral analysis with macro- and micro-grains (with carbon volatiles) by new FE-EPMA method. Impact process can be checked by present quenched indicator of carbon-bearing solids.
Zeng X. Li S. Joy K. Li X. Li Y. Li R. Wang S.	Occurrence and Implications of Secondary Olivine Veinlets in Lunar Breccia Northwest Africa 11273 [#6228] We present the occurrence, petrography, mineralogy, and geological significance of the observed secondary olivine veinlets in lunar feldspathic breccia meteorite NWA 11273. These olivine veinlets are likely formed by deposition from a lunar fluid.
Kimura M. Yamaguchi A. Greenwood R. C. Imae N. Komtsu M.	A New Carbonaceous Chondrite Grouplet, CA [#6044] Y-82094 is an ungrouped C chondrite. Recently, two further unusual carbonaceous chondrites, Asuka 09003 and A 09535 have been reported. Here we present our results for these new chondrites, compare them to Y-82094 and discuss their classification.

Friday, July 12, 2019

MICROANALYSIS OF EXTRATERRESTRIAL SAMPLES AND DEVELOPMENTS IN ADVANCED TECHNIQUES

9:00 a.m. Auditorium

Chairs: Cecile Engrand and Caroline Smith

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
9:00 a.m.	Flynn G. J. * Wirick S. Northrup P.	Phosphorous Speciation in Primitive Interplanetary Dust: Clues to Grain Formation in the Solar Protoplanetary Disk [#6321] X-ray Absorption Near-Edge Structure spectroscopy shows phosphorous in primitive interplanetary dust is predominantly found in oxidized form, rather than in reduced form, as predicted for equilibrium condensation from a disk of Solar composition.
9:15 a.m.	Daly L. * Lee M. R. Hallis L. J. Saxey D. W. Fougerouse D. Rickard W. D. A. Timms N. E. Jourdan F. Reddy S. M. Salge T. Ishii H. A. Bradley J. P. Quadir M. Z. Cox M. A. Bland P. A. Aguiar J. Hattar K. Monterrosa A. Keller L. P. Christoffersen R. Thompson M. S.	Solar Wind Hydration of Itokawa Olivine [#6273] Solar wind add rock / Irradiate it all up / Enjoy soggy mess!
9:30 a.m.	Engrand C. * Charon E. Leroux H. Le Guillou C. Duprat J. Dartois E. Bernard S. Guérin B. Delauche L. Godard M.	Inner Solar System Irradiation History of Minerals in an Ultracarbonaceous Antarctic Micrometeorite (UCAMM) [#6416] We have found evidence for inner solar system irradiation in minerals from ultracarbonaceous Antarctic Micrometeorites (UCAMMs). This proves that minerals spent a few 100,000 years close to the Sun before incorporation in the UCAMM parent body.
9:45 a.m.	Bonal L. * Battandier M. Beck P. Quirico E.	Study of a Series of Fine-Grained AMMs: Multi-Analytical Characterization and Comparison with Carbonaceous Chondrites [#6300] The present work is focused on the organic matter and hydration state of the AMMs in comparison to primitive chondrites. Our objective is to have a better appraisal of compositional variability across cosmomaterials.
10:00 a.m.	Keller L. P. * Ohnishi I. Flynn G. J. Wirick S.	Coordinated EELS, EDX, and FTIR Analyses of Organic Matter in a Hydrated IDP [#6438] Organic functionality in a hydrated IDP was investigated using coordinated analytical techniques, including infrared spectroscopy, and electron microscopy.
10:15 a.m.	Baklouti D. * Noun M. Brunetto R. Borondics F. Calligaro T. Dionnet Z. Della-Negra S.	A Multi-Technique Analysis of the Paris Meteorite to Characterize its Organic Content “In Situ”, Within its Mineral Matrix [#6358] This study is a multi-technique investigation of the Paris chondrite. It combines visible and IR spectroscopies, TOF-SIMS, Raman and micro-PIXE analyses directly applied on a millimetric meteorite fragment, without any chemical extraction.
10:30 a.m.	Hashiguchi M. * Naraoka H. Uesugi M. Yada T. Abe M.	In-Situ Analysis of Soluble Organic Compounds for Hayabusa Category 3 Particles [#6292] We analyzed Hayabusa category three particles by in-situ molecular imaging using desorption electrospray ionization technique to characterize the soluble organic compounds in these particles to discuss their origins.
10:45 a.m.	Chan Q. H. S. * Zolensky M. E. Brunetto R. Parker E. T. Dworkin J. P. Sandt C. Wright I. P. Franchi I. A.	Coordinated Organic Analyses of Hayabusa Category 3 Carbonaceous Particles [#6223] We explore the origins of five Hayabusa category 3 carbonaceous particles via coordinated analyses of their soluble and insoluble organic contents.
11:00 a.m.	Takano Y. * Furota S. O. Ogawa N. Ohkouchi N.	Analytical Development of Underivatized Amino Acids and Short-Chain Peptide Molecules [#6217] We developed the analytical method of underivatized amino acids and short-chain peptide molecules using an ion-pairing liquid chromatography / electrospray ionization mass spectrometry (LC/ESI-MS).
11:15 a.m.	Grady M. M. * Abernethy F. A. J. Barrett T. J. Batty C. Bedford C. Rowden P.	Co-ordinated UV Reflectance and Raman Spectroscopy of Martian Meteorites and Terrestrial Analogue Samples [#6465] Complementary UV-Vis and Raman spectroscopy is a tool for rapid and non-destructive analysis of samples. Comparison with spectra from terrestrial martian analogues should assist in interpretation of data from the surface of Mars.
11:30 a.m.	Liu N. * Ogliore R. C. Nittler L. R. Nie N. X. Dauphas N.	Isotopic and Elemental Analyses of Meteorites and Mars Analogues by Hyperion-NanoSIMS [#6194] We present some recent studies on presolar grains, meteoritic carbonates, and Mars analogues with the Hyperion-II source on the NanoSIMS.
11:45 a.m.	Kim N. K. * Kusakabe M. Park C. Lee J. I. Nagao K.	High Precision Analysis of Three Oxygen Isotopes in Silicates Using an Automated Laser Fluorination [#6137] The CO2-laser BrF5-fluorination system connected to an isotope mass spectrometer in KOPRI can provides high-precision δ^17O and δ^18O measurements of bulk silicate materials. The system is expected to be applied to geo/cosmochemistry research.
12:00 p.m.	Changela H. G. * Lin Y. Gu L. Zhang X.	Reducing Information Loss from Traditional Focussed Ion Beam Thinning of Carbonaceous Chondrite Matrices Using Slice and View Methods: Application for Carbonaceous Asteroid Sample Return [#6291] In order to reduce information losses from traditional focused ion beam (FIB) thinning of carbonaceous chondrite (CC) and future carbonaceous asteroid returned samples, we are using slice and view techniques for FIB thinning of CC matrix chips.
12:15 p.m.	Snead C. J. * Cowden T. R. McCubbin F. M.	Development of Low-Cost Micromanipulation Systems for Small Extraterrestrial Samples [#6210] We describe the development of low-cost micromanipulation systems for reliably handling small (<1mm) extraterrestrial samples, with the goal of increasing accessiblity to miscroscale astromaterials research.
12:30 p.m.	Herd C. D. K. * Tunney L. Hilts R. W.	Advances in Cold Curation: Dealing with Dust [#6466] We report on methods for mitigation of dust during processing of the Tagish Lake meteorite within the Subzero Facility for the Curation of Astromaterials. Results have implications for processing of dust(y) samples within a glove box.
12:45 p.m.	Smith C. L. * Martin D. Gill S-J. Manick K. Miller C. G. Jones C. Rumsey M. S. Duvet L.	The European Space Agency Exploration Sample Analogue Collection (ESA2C) and Curation Facility — Update [#6378] ESA’s Exploration Sample Analogue Collection (ESA2C) and Sample Analogue Curation Facility (SACF) has developed a well characterised collection (mineral, chemical, physical properties) of analogue materials supporting solar system exploration.

Friday, July 12, 2019

CARBONACEOUS CHONDRITES II: COMPONENTS, POST-ACCRETION HISTORIES, AND CLASSIFICATION

9:00 a.m. Small Auditorium

Chairs: Yves Marrocchi and Shoichi Itoh

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
9:00 a.m.	Gattacceca J. * Bonal L. Sonzogni C. Longerey J.	CV Chondrites: More than One Parent Body [#6372] From the study of 50 CV chondrites we show that CVox and CVred chondrites originate from two distant parent bodies.
9:15 a.m.	Takahashi M. * Nakamura T. Shibuya T. Zolensky M. E.	High-Temperature Hydrothermal Alteration Recorded in a Dark Inclusion in the Northwest Africa (NWA) 2900 CK Carbonaceous Chondrite [#6221] We performed a mineralogical study of a dark inclusion with many large diopside veins in a CK chondrite. Thermodynamic calculation based on the bulk composition indicate that formation by hydrothermal alteration at very high temperature of 800°C.
9:30 a.m.	Enokido Y. * Nakamura T. Matsumoto M. Miyake A.	Formation Processes of Secondary Dmisteinbergite and Anorthite in Allende CAI [#6248] In CVoxA CAI, secondary dmisteinbergite was formed from melilite via grossular in presence of liquid water of high pH at moderate temperature. And we suggested the new idea that secondary anorthite formed from secondary dmisteinbergite.
9:45 a.m.	Lévy D. * Aléon J. Aléon-Toppani A. Brunetto R.	Alteration Phases in the E101.1 Compound CAI: Evidence of Nebular Processes? [#6046] The sub µm-scale characterization of secondary phases in a compound Ca and Al rich inclusion (CAI) suggests that some of these phases were formed in the nebular gas before the coagulation of the proto-CAIs.
10:00 a.m.	Ohnishi I. * Kadoi M. Tomeoka K.	Nanostructures of Altered Low-Ca Pyroxene in the Allende CV3 Chondrite: An Investigation by Aberration Corrected Scanning Transmission Electron Microscopy [#6146] We present the results of a mineralogical study of altered low-Ca pyroxene in a chondrule of the Allende CV3 chondrite using an aberration corrected scanning transmission electron microscope (STEM).
10:15 a.m.	Itoh S. *	Post Hydrothermal Alteration Process Before Accretion Process: Trace Element Distribution in Matrix from a Reduced CV Chondrite [#6164] In order to estimate the constituent size of crust in a reduced NWA 7865 CV3 chondrite, which is hardly affected by hydrothermal alteration, petrographic studies with major and trace element distribution in matrix were applied.
10:30 a.m.	Sanders I. S. * Scott E. R. D.	Isotopic Compositions of W and Mo in Allende’s CAIs, Chondrules and Matrix: Possible Legacy of Aqueous Redistribution of W and Mo from Presolar Grains? [#6054] Published variations in W and Mo isotopic compositions of CAIs, chondrules and matrix in Allende bear on Hf-W chronology, and on CAI and chondrule formation. We attribute the variations to selective aqueous leaching of W and Mo from presolar grains.
10:45 a.m.	Righter K. * Schutt J. Harvey R. P. Karner J. Pando K. Satterwhite C.	Pairing Relations of the CO3 Chondrites Recovered at the Dominion Range, Transantarctic Mountains [#6423] The DOM 08006 CO3 chondrite is among the most primitive CO3 known. Here we consider the 13 associated masses with which it is paired and identify all the primitive material. A range of petrologic grades from 3.00 to 3.15 is present within the group.
11:00 a.m.	Zanetta P.-M. * Le Guillou C. Leroux H. Zanda B.	Accretion of Dust to Make Fine-Grained Rims on Still Cooling Chondrules [#6412] We conducted a systematic study to the fine grained rims of three weakly altered chondrites. Our results show that the accretion of dust on still cooling chondrules could explain the textural difference between fine-grained rims and the matrix.
11:15 a.m.	Koch T. E. * Brenker F. E. Prior D. J. Lilly K. Krot A. N. Bizarro M.	Shock History of the Metal-Rich CB Chondrite Quebrada Chimborazo (QC) 001 [#6179] We present our findings of high-pressure phases in a CB chondrite and discuss their meaning regarding the P-T conditions of the shock event.
11:30 a.m.	Zhang A. C. * Kawasaki N. Kuroda M. Li Y. Wang H. Bai X. N. Sakamoto N. Yin Q. Z. Yurimoto H.	Unique Angrite-Like Fragments in a CH3 Chondrite Reveal a New Basaltic Planetesimal [#6015] We observed two angrite-like fragments in a CH chondrite. However, the D^17O values suggest a new parent body, which might have formed prior to the dissipation of the nebular gas. Other significances of the fragments are also discussed.
11:45 a.m.	Martínez M. * Brearley A. J.	Smooth Rims in Queen Alexandra Range (QUE) 99177: The Earliest Stages of Fluid-Rock Interactions in the Most Pristine CR Chondrite [#6097] We have carried out a comprehensive study on smooth rims in QUE 99177, the most pristine CR chondrite known, revealing the phases that characterize smooth rims, their formation mechanisms, and their precursor material.
12:00 p.m.	Busemann H. * Schrader D. L. Alexander C. M. O’D. Kuga M. Maden C.	Noble Gases in Carbonaceous Chondrites — The Effects of Aqueous Alteration as Monitored by CR and Other Carbonaceous Chondrites [#6383] The most primitive CR, CO, CM chondrites contain more than the well-known Q and presolar primordially trapped noble gases. These gases are isotopically (Ne) and elementally distinct (Ar-rich) and are carried in (a) yet unknown water-soluble phase(s).
12:15 p.m.	Krietsch D. * Busemann H. Riebe M. E. I. King A. J. Maden C.	Complete Characterization of the Noble Gas Inventory in CR Chondrite Miller Range 090657 by Direct Etch Release [#6296] “Closed system step etching” allows a direct stepwise analysis of noble gases residing in acid-soluble phases and enables us to detect all primordial, including as yet unconstrained, components contained in the very pristine CR chondrite MIL 090657.
12:30 p.m.	Greer J. * Isheim D. Seidman D. N. Heck P. R.	Nanoscale Heterogeneities in Silicates from Sutter’s Mill [#6102] Using atom-probe tomography, we characterize compositional heterogeneity of olivine grains in the fine-grained matrix of CM chondrite regolith breccia Sutter’s Mill.
12:45 p.m.	Liu N. * Ogliore R. C.	NanoSIMS Isotopic Imaging of Volatile-Rich Clasts from Achondritic Kapoeta Meteorite [#6227] We studied the isotopic compositions of volatile-rich carbonaceous clasts from Kapoeta with NanoSIMS and identified two N-rich particles with the Sun’s N isotopic composition sitting along the rim of Fe-rich minerals.

Friday, July 12, 2019

NON-CARBONACEOUS CHONDRITES: COMPONENTS, POST-ACCRETION HISTORIES, AND CLASSIFICATION

9:00 a.m. Conference Room 1

Chairs: Jon Friedrich and Michael Weisberg

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Times	Authors (*Denotes Presenter)	Abstract Title and Summary
9:00 a.m.	Eschrig J. Bonal L. * Beck P. Prestgard T. J.	Investigating the Link Between Carbonaceous and Ordinary Chondrites and Their Asteroidal Parent Bodies [#6336] A large set of reflectance spectra of carbonaceous and ordinary chondrites is analyzed to better understand the spectral features, and their link to secondary processes and to establish a genetic link between asteroids and carbonaceous chondrites.
9:15 a.m.	Lewis J. A. * Jones R. H.	Asteroid Cooling Rates from Feldspar Exsolution Textures in the H4 Chondrite Avanhandava [#6393] We report asteroid cooling rates determined from feldspar exsolution textures in the H4 chondrite Avanhandava and compare these to cooling rates determined by pyroxene diffusion and metallographic methods.
9:30 a.m.	Friedrich J. M. * Rivers M. L. Ruzicka A.	Relationships Among Physical Properties Indicate the Impact Origins of Friable Ordinary Chondrites [#6039] We postulate that prior to a gentle impact, the friable ordinary chondrites were high-porosity, uncompacted, and cool. The gentle crushing was intense enough to slightly deform the metal grains and cause breakage of the brittle silicates.
9:45 a.m.	Cho M. K. * Choi B.-G.	Heterogeneous Distributions of Shock Metamorphic Features in Equilibrated Ordinary Chondrites [#6266] Shock metamorphic features recorded in olivine, plagioclase and pyroxene of four antarctic H6 chondrites were studies order to (1) reexamine the shock criteria of them and (2) understand distribution patterns in shock features in a chondrite.
10:00 a.m.	Goh S. * Choi B.-G. Byeon M. Hong T. E.	Textures and Compositions of Opaque Phases of Jinju H5 Chondrite [#6304] Opaque minerals in Jinju, a H5 chondrite with high porosity and numerous vug-filling minerals, have been studied. Some taenite grains containing fine mixture of kamacite + tetrataenite + troilite ± metallic Cu, possibly formed by localized impact melting.
10:15 a.m.	Leitner J. * Vollmer C. Hoppe P.	In Situ Isotopic Study of Nitrogen Carriers in Unequilibrated Ordinary Chondrites [#6360] We present first results of an ongoing isotopic and mineralogical study of organic and inorganic nitrogen-bearing phases in ordinary chondrites. Silicon nitride and organic matter have been identified in situ and their N isotopes were investigated.
10:30 a.m.	Ogliore R. C. * Dominguez G. Tafla L.	Oxygen and Hydrogen Isotopic Composition of Zag Water Measured by Cavity Ring-Down Spectroscopy [#6442] We present oxygen and hydrogen isotope measurements of water released by crushing a whole stone of the Zag meteorite.
10:45 a.m.	Pravdivtseva O. * Meshik A. Grokhovsky V.	Iodine-Xenon Record of the Early Shock Events on the Chelyabinsk LL5 Chondrite Parent Body [#6425] We report new I-Xe ages for a chondrule and for the ligh-colored and shock darkened LL5 lithologies from the Chelyabinsk ordinary chondrite.
11:00 a.m.	Takenouchi A. * Sumino H. Shimodate K. Nagao K. Yamaguchi A.	Ar-Ar, I-Xe Ages and Shock Textures of Northwest Africa 2139 LL6 Chondrite: Implications for Shock History of LL Chondrite Parent Body [#6122] We performed petrological-chronological analysis of NWA 2139(LL6). Although NWA 2139 experienced at least two shock events, thermal modification after the first intense shock event at 4.5 Ga may partly erase initial shock features.
11:15 a.m.	Ivanova M. A. * Lorenz C. A. Humayun M. Richter K. Corrigan C. M. Franchi I. A. Verchovsky A. B. Korochantseva E. V. Kozlov V. V. Teplyakova S. I. Kononkova N. N. Korochantsev A. V.	Properties of a New Grouplet of G Metal-Rich Chondrites [#6143] Here we discuss the main properties of a new grouplet of MR GCs and discuss possible origin of their components based on our comprehensive study of the Sierra Gorda (SG) 009 ungrouped MR chondrite.
11:30 a.m.	Crossley S. D. * Ash R. D. Sunshine J. M. Corrigan C. M. McCoy T. J. Mittlefehldt D. W.	Evolution of Platinum-Group Element Phases in R Chondrites [#6195] We assess the behavior of platinum-group elements in R chondrites through progressive metamorphism to understand how oxidizing environments affect PGE distribution at the onset of partial melting and planetary differentiation.
11:45 a.m.	Weisberg M. K. * Zolensky M. E. KImura M. Howard K. T. Ebel D. S. Bolega Y.	Northwest Africa (NWA) 8785, An EL3 Chondrite with FeO-Rich Matrix [#6340] NWA 8785 is a remarkable EL3 chondrite with abundant, potentially altered FeO-rich, fine-grained matrix. The matrix is unlike that in other E3s, except for E3 clasts in the Kaidun breccia and may provide evidence of alteration in the EL3 parent body.
12:00 p.m.	Corrigan C. M. * McCoy T. J.	Exogenic (?) Clasts in LL4 Chondrite Miller Range (MIL) 15285 [#6460] LL4 has clasts/Olivine glass and feldspar/From Vesta or Mars?
12:15 p.m.	Yesiltas M. * Glotch T. D. Jaret S. Verchovsky A. B. Greenwood R. C.	Spectroscopy of Carbonaceous Matter in the Sariçiçek Meteorite [#6035] We present molecular and isotopic composition of a recent howardite, Sariçiçek meteorite. FTIR, Raman, O-, and C-isotopic investigations indicate that carbonaceous matter present in Sariçiçek may have been delivered by a primitive asteroid.
12:30 p.m.	Caliskan O. * Kaya M. Yesiltas M.	Molecular Composition of a Recent Lunar Meteorite: Northwest Africa 11474 [#6080] We present vibrational (infrared and Raman) spectra of a recent Lunar meteorite, Northwest Africa 11474.

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Authors (*Denotes Presenter)	Abstract Title and Summary
Barakat Aly A.	Diamond Meteorites Between Science and Legends [#6193] Much early human beings speculated that diamonds connect with extraterrestrial sources. Reporting diamonds in meteorites and the discovery of diamond rich meteorite from SW Egypt, in 1996, may indicate the existence of diamond meteorites.
Pignatale F. C. * Jacquet E. Chaussidon M. Charnoz S.	Protosolar Cloud Collapse and Redistribution of ^26Al [#6101] We investigate how different ^26Al-distributions within the collapsing solar system’s parent cloud are redistributed in the forming disk’s refractory components, and find clues on the effective heterogeneity of ^26Al and its validity as a chronometer.