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Northwest Africa 8422 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 8422 This is an OFFICIAL meteorite name. Abbreviation: NWA 8422 Observed fall: No Year found: 2014 Country: (Northwest Africa) Mass: 422 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 93 approved meteorites classified as Lodranite. [show all] Search for other: Acapulcoite-lodranite family, Lodranites, and Primitive achondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 25 Nov 2014 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 103:
Northwest Africa 8422 (NWA 8422) (Northwest Africa) Purchased: 2014 Mar Classification: Primitive achondrite (Lodranite) History: Purchased in Temara, Morocco by Adam Aaronson in March 2014. Petrography: (A. Irving and S. Kuehner, UWS) Protogranular aggregate (grainsize 0.8-3 mm) of olivine with reduced rims, subcalcic augite and low-Ca pyroxene with accessory altered metal. Geochemistry: Olivine (cores Fa12.4-12.5, FeO/MnO = 22, N = 2; rims Fa5.0), subcalcic augite (Fs6.7-6.8Wo36.0-35.9; FeO/MnO = 12-13, N = 2) and low-Ca pyroxene (Fs10.7-10.9Wo4.9-4.7; FeO/MnO = 14-16, N = 2). Classification: Lodranite. This specimen is unusual because of the presence of reduced rims on olivine grains. Specimens: 20.1 g including one polished thin section at UWB. The remainder is held by Aaronson. | ||||||||||||||||||||||||||||||
Data from: MB103 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) 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. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Geography: |
Statistics: This is 1 of 9589 approved meteorites from (Northwest Africa) (plus 1869 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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