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Northwest Africa 7718 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7718 This is an OFFICIAL meteorite name. Abbreviation: NWA 7718 Observed fall: No Year found: 2012 Country: (Northwest Africa) Mass: 50.9 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 628 approved meteorites (plus 1 unapproved name) classified as CV3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 1 Jul 2014 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 103:
Northwest Africa 7718 (NWA 7718) (Northwest Africa) Purchased: 2012 Dec Classification: Carbonaceous chondrite (CV3) History: Purchased in Temara, Morocco by A. Aaronson in August 2012. Petrography: (A. Irving and S. Kuehner, UWS). It contains chondrule from 0.6 to 1.5 mm (some containing grains of troilite and taenite) and sparse small CAIs in a fairly uniform brown, ferroan matrix. Olivine, orthopyroxene, subcalcic augite, diopside and very rare kamacite. A CAI contains gehlenite+perovskite+spinel, and one other object consists of diopside+pleonaste+perovskite. Geochemistry: Olivine (Fa0.6-56.6; Cr2O3 in ferroan olivine = 0.05-0.47 wt.%, mean = 0.20 wt.%, sd = 0.18 wt.%, N = 8), orthopyroxene (Fs0.6-1.1Wo1.0), subcalcic augite (Fs3.8Wo35.2), diopside (Fs1.1Wo51.3). Classification: Carbonaceous chondrite (CV3). Specimens: A total of 26.8 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 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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