Dhofar 225

Cafeosite, Ca4Fe2+3Fe3+2□O6S4, a new meteoritic oxysulfide, a redox indicator of metamorphic alteration of carbonaceous asteroids

27/12/2024 18:47 · by karmaka · in carbonaceous chondrite, CY, thermal metamorphism

Marina A. Ivanova, Sergey N. Britvin, Roza I. Gulyaeva, Sofia A. Petrova, Nina G. Zinovieva, Vladimir V. Kozlov, Stanislav N. Tyushnyakov, Anatoly V. Kasatkin MAPS, First published: 24 December 2024 LINK “A natural iron-bearing oxysulfide,…

Reassessing the proposed “CY chondrites”: Evidence for multiple meteorite types and parent bodies from Cr-Ti-H-C-N isotopes and bulk elemental compositions

21/12/2024 00:25 · by karmaka · in aqueous alteration, carbonaceous chondrite, chondrite classification, chondrule, CI, CM, CY, parent body, petrological type, thermal metamorphism

Devin L. Schrader, Zachary A. Torrano, Dionysis I. Foustoukos, Conel M.O’D. Alexander, Jan Render, Gregory A. Brennecka Geochimica et Cosmochimica ActaIn Press, Journal Pre-proof, Available online 20 December 2024 LINK “We report a coordinated bulk…

Classification of CM chondrite breccias—Implications for the evaluation of samples from the OSIRIS‐REx and Hayabusa 2 missionsOPEN ACCESS

25/05/2020 15:13 · by karmaka · in aqueous alteration, carbonaceous chondrite, chondrite classification, CM, Hayabusa-2 / 162173 Ryugu, OSIRIS-REx / 101955 Bennu, space missions

Sarah Lentfort, Addi Bischoff, Samuel Ebert, Markus Patzek Meteoritics & Planetary ScienceVersion of Record online: 25 May 2020 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “CM chondrites are complex impact (mostly regolith) breccias, in which lithic clasts…

The Yamato-type (CY) carbonaceous chondrite group: Analogues for the surface of asteroid Ryugu?OPEN ACCESS

20/08/2019 22:38 · by karmaka · in aqueous alteration, carbonaceous chondrite, CI, CY, Hayabusa-2 / 162173 Ryugu, MCC, thermal metamorphism, ungrouped

A.J. King, H.C. Bates, D. Krietsch, H. Busemann, P.L. Clay, P.F. Schofield, S.S. Russell Geochemistry Available online 20 August 2019 LINK (OPEN ACCESS) PDF (OPEN ACCESS) “We report new mineralogical, petrographic and noble gas analyses…