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Northwest Africa 12262 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 12262 This is an OFFICIAL meteorite name. Abbreviation: NWA 12262 Observed fall: No Year found: 2018 Country: (Northwest Africa) Mass: 3.29 kg | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 318 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). [show all] Search for other: Martian meteorites | ||||||||||||||||||||||||||||
Comments: | Approved 11 Dec 2018 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 107:
Northwest Africa 12262 (NWA 12262) (Northwest Africa) Purchased: 2018 Jul Classification: Martian meteorite (Shergottite) History: Purchased in Ouarzazate, Morocco by Mohamed Aid in July 2018. Petrography: (A. Irving and S. Kuehner, UWS; P. Carpenter, WUSL) Medium-grained with diabasic texture and some small, dark glassy shock melt pockets. Composed predominantly of zoned clinopyroxene and maskelynite with accessory fine grained intergrowths of hedenbergite+fayalite+silica, Fe-Ti oxide (finely exsolved), merrillite and pyrrhotite. Geochemistry: Subcalcic augite (Fs28.5-30.6Wo28.2-23.7, FeO/MnO = 30, N = 2), pigeonite (Fs41.3Wo15.5, FeO/MnO = 31), ferropigeonite (Fs71.1-83.4Wo17.1-11.3, FeO/MnO = 38-45, N = 4), maskelynite (An50.9-52.1Or2.1, N = 2). Classification: Martian (shergottite, diabasic) Specimens: 26.3 g including one polished thin section at UWB; remainder with Aaronson. | ||||||||||||||||||||||||||||
Data from: MB107 Table 0 Line 0: |
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Institutions and collections |
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011) UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023) Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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Geography: |
Statistics: This is 1 of 9589 approved meteorites from (Northwest Africa) (plus 1869 unapproved names) | ||||||||||||||||||||||||||||
Crosslinks: |
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Revision history: |
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