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Northwest Africa 11891 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11891 This is an OFFICIAL meteorite name. Abbreviation: NWA 11891 Observed fall: No Year found: 2016 Country: (Northwest Africa) Mass: 290 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 658 approved meteorites classified as Ureilite. [show all] Search for other: Achondrites, Ureilites | ||||||||||||||||||||||||||||||
Comments: | Approved 3 Aug 2018 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 107:
Northwest Africa 11891 (NWA 11891) (Northwest Africa) Purchased: Nov 2016 Classification: Ureilite Petrography: olivine (90%) with reduced rims, pyroxene (5%), metals, and carbon phases. Olivine grains are up to 1.5 mm. Graphite and diamonds were found. Geochemistry: Mineral Compositions and Geochemistry: Olivine cores, Fa19.7±0.1; rims, Fa10.2±2.0. Pyroxene, Fs16.7±0.2Wo7.6±0.1. Classification: Ureilite Specimens: 20.1g including a thin section and polished mount at UWO. | ||||||||||||||||||||||||||||||
Data from: MB107 Table 0 Line 0: |
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Institutions and collections |
UWO: University of Western Ontario, Department of Earth Sciences, BGS 1026, 1151 Richmond St. N, London, Ontario, Canada N6A 5B7, Canada (institutional address; updated 18 Jul 2015) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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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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