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Northwest Africa 10957 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 10957 This is an OFFICIAL meteorite name. Abbreviation: NWA 10957 Observed fall: No Year found: 2016 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 26 approved meteorites classified as CM1/2. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 1), CM chondrites, and CM-CO clan chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 17 Dec 2016 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 105:
Northwest Africa 10957 (NWA 10957) (Northwest Africa) Purchased: 2016 Jun Classification: Carbonaceous chondrite (CM1/2) History: Purchased by Luc Labenne from a Moroccan dealer at the Ensisheim Show in June 2016. Physical characteristics: A single, black stone (12.8 g) notable for its unusually low density and evident porosity. Petrography: (A. Irving and S. Kuehner, UWS) Porous aggregate of very small, partly serpentinized chondrules (apparent diameter 150±100 µm) and angular mafic silicate grains (some compositionally zoned) in a fine grained matrix (deep red-brown in thin section) composed mainly of serpentine with accessory pentlandite, pyrrhotite, rare chromite and kamacite. Geochemistry: Olivine (Fa0.9-54.5, N = 5), orthopyroxene (Fs1.0-3.9Wo3.8-5.0, N = 2). Classification: Carbonaceous chondrite (CM1/2). Specimens: 2.71 g including one polished thin section at UWB; remainder with Labenne. | ||||||||||||||||||||||||||||||
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) Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 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 7579 approved meteorites from (Northwest Africa) (plus 1969 unapproved names) |