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Northwest Africa 10831 | |||||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 10831 This is an OFFICIAL meteorite name. Abbreviation: NWA 10831 Observed fall: No Year found: 2015 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 352 approved meteorites classified as LL3. [show all] Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||||
Comments: | Approved 24 Sep 2016 | ||||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 105:
Northwest Africa 10831 (NWA 10831) (Northwest Africa) Purchased: 2015 Nov Classification: Ordinary chondrite (LL3) History: Purchased by Kally Wombacher in November 2015 from a dealer in Erfoud, Morocco. Petrography: (A. Irving and S. Kuehner, UWS) Closely packed, well-formed chondrules (apparent diameter 800±400 μm) are set in a sparse fine grained, black matrix. Geochemistry: Olivine (Fa1.7-44.5, Cr2O3 in ferroan examples 0.05-0.18 wt.%, mean 0.10±0.04 wt.%, N = 8), orthopyroxene (Fs3.1-23.7Wo0.4-1.6, N = 3), subcalcic augite (Fs6.6Wo31.2), augite (Fs3.3Wo41.1). Magnetic susceptibility log χ (× 10-9 m3/kg) = 3.80. Classification: Ordinary chondrite (LL3). Specimens: 22 g including one polished thin section at UWB; remainder with Mr. K. Wombacher. | ||||||||||||||||||||||||||||||||
Data from: MB105 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. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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Geography: |
Statistics: This is 1 of 7529 approved meteorites from (Northwest Africa) (plus 1975 unapproved names) |