Meeting Planning Services

1:30 PM

Gibson H. E.* Daly L.

The Winchcombe Meteorite: The Woodmancote Stones and a New Lithology? [#6102]
This study reports on a lithological analysis of a piece of the Winchcombe meteorite from a new site (Woodmancote) and is interpreted as a potential new lithology (I). This adds to the eight (A-H) identified from other sites along the strewn field.

1:45 PM

Einsle J. F.* Griffin S. Floyd C. Lehnert K. A. Lee M. R.

Leveraging Uncertainty to Guide Lithographic Classification of the Cold Bokkeveld Carbonaceous Chondrite: A Data Driven Multiscale Correlative Study [#6361]
An outstanding problem in understanding the aqueous alternation of C-complex derived meteorites is the lithographic classification of clasts in brecciated samples. We use a new approach to derive these classifications using machine learning.

2:00 PM

Findlay R.* Franchi I. A. Zolensky M. E. Greenwood R. C. Anand M. et al.

Lithological Diversity of a C-Complex Asteroid Recorded in Lonewolf Nunataks 94101 [#6400]
Here we present an coordinated petrographical and O-isotope study of 19 lithologies from the Lonewolf Nunataks 94101 Antarctic CM2 chondrite.

2:15 PM

Cardon-Pilotaz P.* Krot A. N. Nagashima K. Alevy E. G. Dunn T. L.

Mineralogically Pristine, Metamorphosed and Metasomatically Altered Refractory Inclusions in CK3/CV3-4 Chondrite Breccia Camel Donga 003 [#6079]
We report on mineralogy and petrography of refractory inclusions in Camel Donga 003, a CK3/CV3-4 breccia. Refractory inclusions of CD003 have experienced various degrees of metamorphism, from pristine to extensively metamorphosed.

2:30 PM

Lodders K.*

Mobile Elements in CI-Chondrites [#6365]
Histograms of concentration frequency distributions can serve as quality controls and may provide insights on mobile element precipitation and redistribution during aqueous alteration on the CI-chondrite parent bodies and during meteorite storage.

2:45 PM

Daly L.* Suttle M. D. Lee M. R. Bridges J. Hicks L. et al.

CM Carbonaceous Chondrites: Phase Heritage of Tochilinite-Cronstedtite Intergrowths Reveal a Carbonate Precursor [#6307]
What were TCIs? / Texture suggests carbonate / Where did carbon go?

3:00 PM

Lee M. R.* Almeida T.

The Thermal Stability of Tochilinite in CM Meteorites Measured by TEM Heating Experiments [#6048]
At what temperature does tochilinite break down during heating of CM parent bodies?

3:15 PM

Benner M. C.* Schrader D. L. Zega T. J.

A Coordinated Analytical Investigation of Sulfide Minerals in Type 1 Chondrites as Analogues to Bennu and Ryugu [#6199]
We investigate pyrrhotite and pentlandite minerals in Orgueil CI1.0 and Kolang CM 1.0 chondrites as analogues to Bennu and Ryugu. Thermodynamic conditions of alteration are constrained based on structure and composition.

3:30 PM

Harrison C. S.* King A. J. Jones R. H.

Formation Conditions of Apatite and Mg-Phosphates in CI and CY Chondrites [#6405]
We characterize phosphate grains within CI and CY carbonaceous chondrites. We find they contain rare Mg-phosphates and F-rich apatite, indicating the phosphates formed under similar fluid compositions on their respective parent bodies.

3:45 PM

Ushikubo T.* Tomioka N. Yamaguchi A.

Isotopic and Mineralogical Study of Carbonates in Aguas Zarcas (CM2) [#6082]
We present isotopic and mineralogical study of Ca-rich carbonates of the Aguas Zarcas (CM2) meteorite using SEM, SIMS, EPMA, and TEM.

4:00 PM

Ong I. J.* Barnes J. J. Smith L. R. Haenecour P. Zega T. J. et al.

Coordinated Microanalytical Study of Hydrothermal Alteration in the Winchcombe Meteorite [#6252]
We are reporting the mineralogical and petrological work on carbonates within different petrological contexts to understand differences in formation conditions on the Winchcombe parent body.

4:15 PM

Hanna R. D.* Miller K. E. Whittington A. Bartels K. Edey D. R. et al.

Highly Porous Clast with Higher Aqueous Alteration and Carbonate Abundance in CM Murchison [#6355]
We examine the relationships between porosity, aqueous alteration, and carbonate abundance in CM Murchison, with possible implications for the interpretation of Bennu's aqueous alteration history.

4:30 PM

Bailey E.* Telus M. Lam P. Webb S.

Fe XANES Analysis of Carbonates in CM Chondrites Reveals Varying Redox States During Aqueous Alteration [#6464]
CM chondrites contain carbonate minerals that formed during progressive aqueous alteration. Synchrotron Fe XANES measurements of CM chondrites reveal a complex history of oxidation states preserved in individual calcite and dolomite grains.

4:45 PM

Vacher L. G.* Laize-Générat L. Bonal L. Flandinet L. Poch O. et al.

Search for Multiple Isotopic Carriers of Nitrogen in Type 2 Chondrites [#6285]
We report here the bulk C and N elemental and isotopic compositions of a suite of CM chondrites. We try to identify the main N carriers using the IRMS technique. We also report the first bulk δ15N analysis for Asuka 12236 and Paris.