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Northwest Africa 7990 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7990 This is an OFFICIAL meteorite name. Abbreviation: NWA 7990 Observed fall: No Year found: 2010 Country: (Northwest Africa) Mass: 452 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 100 approved meteorites classified as LL7. [show all] Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||
Comments: | Approved 14 Oct 2013 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 102:
Northwest Africa 7990 (NWA 7990) (Northwest Africa) Purchased: 2010 Classification: Ordinary chondrite (LL7) History: Purchased by Terry Boswell in 2010 from a dealer in Erfoud, Morocco. Petrography: (A. Irving and S. Kuehner, UWS) Completely recrystallized with no chondrules. Olivine, orthopyroxene, clinopyroxene, sodic plagioclase, chromite, stained kamacite and troilite. Geochemistry: Olivine (Fa32.5-33.0), orthopyroxene (Fs26.3-26.4Wo2.6-1.9), clinopyroxene (Fs10.4-11.5Wo44.1-43.1). Classification: Ordinary chondrite (LL7). Specimens: 26 g and one polished thin section are at UWB. The remainder is held by Aaronson. | ||||||||||||||||||||||||||||||
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) 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. 102, MAPS 50, 1662, September 2015
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Geography: |
Statistics: This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
This lists the most popular meteorites among people who looked up this meteorite.
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Revision history: |
This lists important revisions made to data for this record.
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