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Northwest Africa 7954 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7954 This is an OFFICIAL meteorite name. Abbreviation: NWA 7954 Observed fall: No Year found: 2013 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 275 approved meteorites classified as Eucrite-mmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 14 Nov 2013 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 102:
Northwest Africa 7954 (NWA 7954) (Northwest Africa) Purchased: 2013 Apr Classification: HED achondrite (Eucrite, monomict) History: Purchased by Steve Witt in April 2013 from a Moroccan dealer. Petrography: (A. Irving and S. Kuehner, UWS) Very fresh fragmental breccia composed mainly of angular crystal fragments of exsolved pigeonite and calcic plagioclase with accessory ilmenite, chromite and troilite. Additionally, there are sparse related basaltic eucrite clasts, plus some coarser mineral clasts derived from gabbroic eucrite protoliths. Geochemistry: Host orthopyroxene (Fs57.4-58.5Wo1.8-1.9; FeO/MnO = 31-34), clinopyroxene exsolution lamellae (Fs29.3Wo36.3; FeO/MnO = 32). Classification: Eucrite (monomict). Specimens: 22.9 g and one polished thin section are at UWB. The remainder is held by Mr. S. Witt. | ||||||||||||||||||||||||||||
Data from: MB102 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) UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
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Photos: |
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Geography: |
Statistics: This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names) |