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Poster Session: Chondritic Parent Bodies and Their Components

Thursday, March 16, 2023, 6:30 PM
Town Hall Exhibit Area

Zolensky M.* Ziegler K. Le L. Mikouchi T. Masuda M. et al.
Less-Altered CI Lithology in the Kaidun Meteorite Breccia [#1409]
A less-altered CI lithology has been found in the Kaidun meteorite breccia.
Martin P-E. M. C.* Lee M. R.
Calcium-Aluminium-Rich Inclusion Abundance and Mineralogy Within CM Carbonaceous Chondrites [#2844]
Why love CAIs? / These old weary travelers / Have stories to tell.
Han J.* Matsuda N. Liu M.-C. Park C. Keller L. P.
Al-Mg Isotopic Constraints on the Condensation Age of Fine-Grained Refractory Inclusions in Reduced CV3 Chondrites [#2802]
We report Al-Mg isotopic data of fine-grained and fluffy Type A CAIs from CV3 chondrites to better establish the distribution of initial 26Al/27Al ratios.
Tsuruoka Y.* Tachibana S.
Experimental Study of Effect of Recondensation on Type B CAI Formation in the Protosolar Disk [#1399]
We found experimentally that recondensation of evaporated Mg and Si from type B CAI melt affects the formation condition of type B1 CAI-like melilite mantle.
Martin P-E. M. C.* King A. J. Spratt J. Daly L. Lee M. R.
Mueller J. M.* Ehlmann B. L. Rossman G. R. Greenberger R. N. Marquez R. T. et al.
A Spectral Database of Calcium-Aluminum-Rich Inclusions and Applications to Asteroid Observations [#1925]
We present infrared reflectance spectra for Calcium-Aluminum-rich inclusions.
De Gregorio B. T.* Cody G. D. Stroud R. M. Sandford S. A. Le Guillou C. et al.
Variability of Organic Matter Across CI Chondrites and Ryugu [#2866]
Carbonaceous grains in Orgueil and Alais have a limited range of organic functional group chemistry, unlike what has been reported from Ryugu grains.
Fu R. R. Steele S. C.* Simon J. B. Teague R. Najita J. et al.
Implications for Chondrule Formation Regions and Solar Nebula Magnetic Fields from Statistical Reanalysis of Chondrule Paleomagnetism [#1757]
Considering the distribution, not just the mean, of chondrule paleointensities suggests formation at large disk radii, likely in fluctuating magnetic fields.
Baker E. B.* Jones R. J. Villeneuve J. V.
Halogen Abundances in the Early Solar System: Halogens in Chondrule Precursors, and Modifications During and After Chondrule Formation [#2648]
We present novel SIMS data on F, Cl, Br and I in enstatite chondrite mesostasis. We infer low condensation temperatures and diffusively modified abundances.
Guigoz V.* Seret A. Portail M. Libourel G. Connolly H. C. et al.
High Resolution Cathodoluminescence of Carbonates from the Cold Bokkeveld CM2 Chondrite: In Preparation for Study of OSIRIS-REx Asteroid Samples [#1467]
SEM-CL is used to realize H-R images of carbonates in the CM chondrite Cold-Bokkeveld, revealing variations within materials that would be otherwise invisible.
Floyd C. J.* Macante A. Daly L. Lee M. R.
Unravelling Petrofabrics in the Brecciated CM Chondrite Cold Bokkeveld [#1477]
Despite many clasts / Similarities exist / One fabric through all?
Tkalcec B. J.* De Pauw E. Lindner M. Bazi B. Vekemans B. et al.
REE-Rich, Ca-Phosphate Rim Around a Phyllosilicate Nodule in the Winchchombe Carbonaceous Chondrite — Witness of Intense Aqueous Alteration on the Parent Body [#1485]
We describe a Ca-phosphate rim around a phyllosilicate nodule in the Winchcombe CM carbonaceous chondrite that is also REE-enriched relative to the matrix.
Shirley K. A.* Curtis R. J. Bates H. C. King A. J. Bowles N. E. et al.
Visible and Infrared Spectra Analysis of the Winchcombe Meteorite for Comparison to Planetary Surfaces [#1490]
New meteorite / Tell us your spectral secrets / To find your brethren.
Jenkins L. E.* Lee M. R. Daly L. King A. J.
Mildly Shocked Olivine in the Kolang CM Chondrite — Evidence Against Petrofabric Formation in a Single Impact [#1526]
Kolang’s shock too low / To form its petrofabric / By single impact.
Jung J.* Northrup P. Glotch T. D. Flynn G. Flores L.
Microscale Heterogeneity of Sulfur Chemistry in Carbonaceous Chondrites: Microbeam XANES [#2749]
Exploration of microscale heterogeneity of sulfur in multiple carbonaceous chondrites may improve our understanding of their formation and alteration processes.
Baziotis I.* Ferrière L. Ma C. Hu J. Palles D. et al.
Compositional and Raman Study of High-Pressure Minerals in Shocked L6 Chondrite Northwest Africa 12841 [#1205]
Northwest Africa 12841 is a highly shocked L6 ordinary chondrite hosting eight high pressure minerals.
Phelan N. D.* Rai V. K. Hines R. Wadhwa M.
Titanium Isotope Anomalies in Carbonaceous Chondrites: Implications for Isotopic Heterogeneity in the Early Solar System [#1396]
This work aims to better characterize the variability of the most neutron-rich Ti isotope (50-Ti) compositions within and among the carbonaceous chondrites.
Lee M R. Floyd C. J.* Griffin S.
A Xenolith-Bearing Xenolith in the Cold Bokkeveld CM Carbonaceous Chondrite: A Window into Three Generations of Primitive Asteroids [#1645]
A rock in a rock in a rock: a fascinating glimpse into the dynamics of the early protoplanetary disk.
Riveros E. M.* Friedrich J. M. Ebel D. S.
Examination of the Sizes and Shapes of Clasts in the Ivuna CI Chondrite [#1670]
We use X-ray microCT to examine the 3D clast size and shape within the Ivuna CI chondrite. Clasts in the ~1-mm size range within Ivuna have an equant shape.
Jurewicz A. J. G.* Burnett D. S. Amarsi A. M. Grevesse N.
Evidence CI Chondrite Compositions are Not Solar [#1702]
Both CI/Photospheric and CI/Genesis elemental ratios become larger with decreasing condensation temperature, suggesting CI composition is not exactly solar.
McCubbin F. M.* Lewis J. A. Barnes J. J. Boyce J. W. Gross J. et al.
Queener M. G.* Lunning N. G. Fries M. D. Jakubek R. S. Peslier A. H.
Potential Discovery of Amphibole in Miller Range (MIL) 090292 via Raman Spectroscopy [#1805]
This ungrouped carbonaceous chondrite breccia has evidence for a wide variety of parent body alteration conditions among its clasts.
Flores L.* Glotch T. D. Northrup P. Muñoz A. Jung J. et al.
Correlated Micro-Scale Analyses of Four CM2 and C2 Ungrouped Carbonaceous Chondrites [#1853]
Using various techiniques, we acquire RGB maps and spectra at various spatial scales of two CM2 meteorites and two C-ungrouped meteorites.
Baliyan S.* Ray D.
Petrographic and Mineralogical Characteristics of Calcium-Rich Carbonates in CM Chondrites [#2385]
In this study we analysed the carbonates present in CM-type meteorites in order to analyze the microenvironmental conditions during the aqueous alteration.
Dobrică E.* Nuth J. A. Brearley A. J.
Constraints in the Formation Conditions of FeO-Rich Olivines [#2329]
Pure fayalite forms / Yet no MgO-rich olivine / Hint diffusion.
Righter K.* Busemann H. Eckart L. M. Alexander C. Foustoukos D. et al.
Yamamoto D.* Takigawa A. Tachibana S.
An Experimental Study on Evaporation of Silicon Carbide in a Low-Pressure Hydrogen-Water Vapor Gas Mixture [#1129]
Presolar SiC could survive more efficiently than presolar silicates but would evaporate before the O-isotope exchange of presolar corundum in the disks.