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Northwest Africa 7727 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7727 This is an OFFICIAL meteorite name. Abbreviation: NWA 7727 Observed fall: No Year found: 2012 Country: (Northwest Africa) Mass: 150 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 840 approved meteorites (plus 2 unapproved names) classified as L3. [show all] Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||
Comments: | Approved 1 Jul 2014 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 103:
Northwest Africa 7727 (NWA 7727) (Northwest Africa) Purchased: 2012 Dec Classification: Ordinary chondrite (L3) History: Purchased in Temara, Morocco by Adam Aaronson in August 2012. Petrography: (A. Irving and S. Kuehner, UWS) Well-developed, separated, small to medium-sized chondrules within a fine-grained ferroan matrix. Olivine, orthopyroxene, subcalcic augite, sparse troilite and rare altered kamacite. Plagioclase is apparently absent. Geochemistry: Olivine (Fa2.9-33.8; Cr2O3 in ferroan olivine = 0.02-0.09 wt.%, mean = 0.06 wt.%, sd = 0.02 wt.%, N = 7), orthopyroxene (Fs2.6-22.0Wo0.4-0.5; Fs57.1Wo3.0), subcalcic augite (Fs11.8-13.6Wo32.0-30.8). Classification: There are no CAI and chondrule sizes are 0.5 to 2 mm, so this is an ordinary chondrite (L3). Specimens: A total of 20.2 g of material and one polished thin section are on deposit at UWB. Aaronson holds the main mass. | ||||||||||||||||||||||||||||||
Data from: MB103 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. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Geography: |
Statistics: This is 1 of 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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