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Northwest Africa 8131 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 8131 This is an OFFICIAL meteorite name. Abbreviation: NWA 8131 Observed fall: No Year found: 2013 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 566 approved meteorites (plus 1 unapproved name) classified as CO3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 27 Jan 2015 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 104:
Northwest Africa 8131 (NWA 8131) (Northwest Africa) Purchased: 2013 Sep Classification: Carbonaceous chondrite (CO3) History: Purchased by S. Vasiliev in September 2013 from a dealer in Erfoud, Morocco. Petrography: (A. Irving and S. Kuehner, UWS) Fairly abundant, small chondrules together with mineral fragments and fine-grained CAI occur in a brown, fine-grained matrix. Minerals are olivine, orthopyroxene, clinopyroxene, Ni-poor kamacite, rare kirschsteinite and minor barite. No sulfides were detected. Geochemistry: Olivine (Fa0.8-75.5; Cr2O3 in ferroan examples is 0.14-0.29 wt.%, mean 0.17 wt.%, s.d. 0.06 wt.%, N = 9), orthopyroxene (Fs0.9-39.0Wo1.0-0.9, N = 3), clinopyroxene (Fs0.9Wo41.8). Classification: Carbonaceous chondrite (CO3). Specimens: 8.4 g including one polished thin section at UWB. The remaining material is held by S. Vasiliev. | ||||||||||||||||||||||||||||||
Data from: MB104 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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Photos: |
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Geography: |
Statistics: This is 1 of 7579 approved meteorites from (Northwest Africa) (plus 1969 unapproved names) |