^1,2Elana G. Alevy,³Tasha L. Dunn,⁴Alexander N. Krot,^4,5Paul Cardon-Pilotaz,⁶Juliane Gross
Meteoritics & Planetary Science (in Press) Link to Article [https://doi.org/10.1111/maps.14358]
¹Department of Geology, Colby College, Waterville, Maine, USA
²Lunar and Planetary Laboratory, University of Arizona, Tucson, Arizona, USA
³Department of Geology, Colby College, Waterville, Maine, USA
⁴ Institute of Geophysics and Planetology, School of Ocean and Earth Science Technology, University of Hawai’i at Mānoa, Honolulu, Hawaii, USA
⁵Ecole Normale Supérieure de Lyon, Lyon, France
⁶Astromaterials Acquisition and Curation Office, NASA Johnson Space Center, Houston, Texas, USA
Published by arrangement with John Wiley & Sons

Camel Donga 003 (CD 003) was originally classified as a CK3 chondrite based on its coarse-grained matrix, Ni-rich sulfides, Cr-rich magnetite, and CK-like silicate mineralogy. However, after preliminary backscattered electron imaging and elemental mapping of a 400 mm2 thin section of CD 003, subsequent mineral chemistry analysis confirmed that the sample is a fragmental breccia consisting of three oxidized CV lithologies. In the two largest lithologies, both mineralogically pristine and metasomatically altered refractory inclusions are commonly found in close proximity to one another. This suggests that brecciation and mixing of different lithologies in CD 003 occurred on a submillimeter scale. The least abundant lithology—an 8 × 3 mm clast—is distinguished from the other lithologies by its recrystallized matrix, poorly defined chondrules, and equilibrated olivine (Fa42). The homogeneity of matrix and chondrule olivine indicates that this lithology has been metamorphosed to at least petrologic subtype 3.8 conditions. We can trace the provenance of our sample to the main mass of CD 003, which must contain the CK material described in its original classification. Therefore, the presence of the three oxidized CV lithologies suggests that CD 003 is the first CV/CK3 chondrite breccia.