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| Northwest Africa 7316 | |||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 7316 This is an OFFICIAL meteorite name. Abbreviation: NWA 7316 Observed fall: No Year found: 2012 Country: (Northwest Africa) Mass:  153 g | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 11372 approved meteorites (plus 22 unapproved names) classified as H5. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||
| Comments: | Approved 22 Oct 2013 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 102:
Northwest Africa 7316 (NWA 7316) (Northwest Africa) Purchased: 2012 Apr Classification: Ordinary chondrite (H5) History: Purchased by Kuntz in April 2012 from a dealer in Erfoud, Morocco. Petrography: (A. Irving and S. Kuehner, UWS) Largely recrystallized, but with sparse, medium-sized (to 0.7 mm) chondrules and partial chondrules. There is a moderate content of fairly fresh metal grains, but also some thin cross-cutting, orange iron hydroxide veinlets. Geochemistry: Olivine (Fa21.5-21.8) with FeO/MnO=43, orthopyroxene (Fs17.8-18.8Wo0.4-1.3) with FeO/MnO=23-27, clinopyroxene (Fs15.6Wo13.2). Classification: Ordinary chondrite (H5). May be transitional H/L5 based on the olivine and pyroxene compositions, including their FeO/MnO ratios, being intermediate between those established for equilibrated H and L chondrites. | ||||||||||||||||||||||||||||||
| 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) Kuntz: Fabien Kuntz, France; Website (private address) |
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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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| Photos: |
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| Geography: |
Statistics: This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names) | ||||||||||||||||||||||||||||||