Evidence CI Chondrite Compositions are Not Solar
Jurewicz A. J. G.* Burnett D. S. Amarsi A. M. Grevesse N. 54th Lunar and Planetary Science Conference 2023 abstract [#1702] Both CI/Photospheric and CI/Genesis elemental ratios become larger with decreasing condensation temperature, suggesting CI composition is not exactly solar.
An Astrophysical Site for Chondrule Formation
Herbst W.* Greenwood J. P. 54th Lunar and Planetary Science Conference 2023 abstract [#1209] We propose that chondrules form during the accretion of primitive planetesimal fragments to differentiated planetesimals.
The Finnish Hyperbolic Grazing Meteor: Are Interstellar Earth Impactors Biased?
Peña-Asensio E.* Trigo-Rodríguez J. M. Socas-Navarro H. Visuri J. Gritsevich M. Siljama M. 54th Lunar and Planetary Science Conference 2023 abstract [#1486] We report a hyperbolic meteor that shares statistical anomalies with CNEOS interstellar candidates, which may unveil an unknown source of…
The El Ali (Somalia) IAB Iron Meteorite: New Minerals Reflecting Unusual Conditions of Formation
Herd C. D. K.* Locock A. J. Saini R. Ma C. 54th Lunar and Planetary Science Conference 2023 abstract [#2220] Giant iron mass / Reveals three new minerals / Scientists elation.
The Angrite Parent Body as the Archetypal First-Generation Planetesimal: Large, Reduced and Mg-Enriched
Tissot F. L. H.* Collinet M. Namur O. Grove T. L. 54th Lunar and Planetary Science Conference 2023 abstract [#1221] Two groups of quenched angrites. Experimental constraints point to a possibly Moon-sized parent body. A self-consistent bulk composition for the APB…
History of Hydrogen in the Early Inner Solar System as Recorded in Angrite Meteorites
Rider-Stokes B. G.* Anand M. White L. F. Stephant A. Franchi I. A. Zhao X. 54th Lunar and Planetary Science Conference 2023 abstract [#1602] We investigate H abundance and isotopic compositions of minerals in angrites, providing insights into the timing of volatile addition to…
Unravelling the Aqueous Alteration History of CM Chondrites by Kinetic Modelling
Haller R. L. H.* Lee M. R. L. 54th Lunar and Planetary Science Conference 2023 abstract [#1488] A PHREEQC model was built to investigate the evolution of mineralogy and petrologic type during aqueous alteration of a CM3 precursor.
Meteoritic Carbonates — The Key to Sampling Extraterrestrial Fluids?
Krizan P. A. B.* Chan Q. H. S. Zolensky M. E. Bodnar R. J. Papineau D. Bays C. 54th Lunar and Planetary Science Conference 2023 abstract [#1498] Here, we aim to locate and analyze new candidates for extraterrestrial fluid inclusions within carbonate grains of several…
Comparing the Ages of OC and CC CAIs
Dunham E. T.* Burman A. McKeegan K. D. Liu M.-C. Matsuda N. Telus M. 54th Lunar and Planetary Science Conference 2023 abstract [#1634] NC and CC / CAIs formed at the same / Time and area.
Abundance of Presolar Grains in the C3.00-Ungrouped Chondrite Chwichiya 002
Smith L. R.* Haenecour P. Barnes J. Domanik K. Neuman M. Wang K. 54th Lunar and Planetary Science Conference 2023 abstract [#2425] Chwichiya 002 is a C3.00-ungrouped chondrite with presolar grain abundances similar to the ones in the most primitive carbonaceous chondrites.
Evidence of Space Weathering on the CI1-Chondrite Asteroid 162173 Ryugu
Hiroi T.* Milliken R. E. Robertson K. M. Schultz C. D. Amano K. Nakamura T. 54th Lunar and Planetary Science Conference 2023 abstract [#1040] A 6 nm shift in the 2.7-micron band positoin between returned samples and the surface materials of asteroid Ryugu indicates…
Compositions of Carbonaceous-Type Asteroidal Cores in the Early Solar System
Zhang B.* Chabot N. L. Rubin A. E. 54th Lunar and Planetary Science Conference 2023 abstract [#1606] Fractional-crystallization modeling of carbonaceous-type iron meteorites shows that the CAIs distribution in the protoplanetary disk (<1 Ma) was heterogeneous.
Experimental Study of Ungrouped Achondrite Erg Chech 002
Balemian-Spencer M. F.* Krawczynski M. J. Carpenter P. K. Ogliore R. C. 54th Lunar and Planetary Science Conference 2023abstract [#2574] Erg Chech is ancient / Its chemistry is funky / Let’s talk about it.
High Resolution Micro Raman Spectroscopy on the Winchcombe Carbonaceous Chondrite (CM2)
Hoffmann V. H.* Kaliwoda M. Junge M. Hentschel F. Schmahl W. W. 54th Lunar and Planetary Science Conference 2023abstract [#2308] Within this project, the phase composition of Winchcombe (CM2) samples is investigated by 2D/3D digital microscopy and micro Raman spectroscopy.
Ni Isotopic Composition of Ryugu Samples Returned by the Hayabusa2 Mission
Spitzer F.* Burkhardt C. Kleine T. Hayabusa2 Initial Analysis Chem. Team Hayabusa2-Initial-Analysis core 54th Lunar and Planetary Science Conference 2023abstract [#2488] The Ni isotopic composition of Ryugu is identical to that of CIs and different from all other…
Water in Asteroid Ryugu is Deuterium-Rich Compared to Earth and CI Chondrites
Nittler L. R.* Barosch J. Wang J. Alexander C. M. O’D. 54th Lunar and Planetary Science Conference 2023abstract [#1411] Use oxygen ions / Measure Ryugu water / Deuterium-rich!
Carbonate Mineralogy of the C1 Clasts in Kaidun Meteorite
Ogiya K.* Mikouchi T. Zolensky M. E. 54th Lunar and Planetary Science Conference 2023abstract [#1948] The carbonate analysis shows that some of the C1 clasts in Kaidun meteorite are unique materials not bound by the existing framework of CI…
Ryugu and the Quest for Unaltered CI-Like Materials from the Early Solar System
Goodrich C. A.* Lee S. Mane P. Hamilton V. E. Zolensky M. E. Kita N. T. 54th Lunar and Planetary Science Conference 2023abstract [#1446] Anhydrous silicates and Ca,Al-rich phases in Ryugu are remnants of CI3 material. We are studying xenoliths from polymict ureilites that show…
