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Northwest Africa 7311 | |||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7311 This is an OFFICIAL meteorite name. Abbreviation: NWA 7311 Observed fall: No Year found: 2012 Country: (Northwest Africa) Mass: 732 g | ||||||||||||||||||||||||||
Classification history: |
This is 1 of 645 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 6 Sep 2013 | ||||||||||||||||||||||||||
Writeup |
Writeup from MB 102:
Northwest Africa 7311 (NWA 7311) (Northwest Africa) Purchased: 2012 Apr Classification: Carbonaceous chondrite (CO3) History: Purchased in Temara, Morocco by Aaronson in April 2012. Whole stone. Petrography: (A. Irving and S. Kuehner, UWS) Unequilibrated specimen consisting of small (typically <0.3 mm) chondrules, mineral fragments and rare CAI in a matrix composed mainly of ferroan olivine, iron sulfide and minor altered kamacite. Geochemistry: Olivine (Fa0.2-48.3; Cr2O3 in ferroan olivines = 0.06-0.09 wt.%, mean 0.07 wt.%, s.d. 0.02 wt.%, N =7), orthopyroxene (Fs2.4-6.2Wo3.0-0.6), pigeonite (Fs1.2Wo19.3), clinopyroxene in CAI (Fs0.8Wo50.1). Classification: Carbonaceous chondrite (CO3). | ||||||||||||||||||||||||||
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 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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