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Northwest Africa 8318 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 8318 This is an OFFICIAL meteorite name. Abbreviation: NWA 8318 Observed fall: No Year found: 2014 Country: (Northwest Africa) Mass: 71 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 280 approved meteorites classified as Eucrite-mmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 6 Jun 2014 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 103:
Northwest Africa 8318 (NWA 8318) (Northwest Africa) Purchased: 2014 Feb Classification: HED achondrite (Eucrite, monomict) History: Purchased by Darryl Pitt from a Moroccan dealer in February 2014. Petrography: (A. Irving and S. Kuehner, UWS) Very fresh monomict breccia composed of clasts of basaltic eucrite and related crystalline debris. A moderate degree of recrystallization is evident from the texture of the coarse grained matrix. Eucrite clasts consist of exsolved pigeonite, calcic plagioclase, silica polymorph, ilmenite, Ti-rich chromite and troilite. Geochemistry: Host orthopyroxene (Fs57.8-60.4Wo2.1-1.8; FeO/MnO = 32-33), clinopyroxene exsolution lamellae (Fs25.4-25.5Wo42.4-42.6; FeO/MnO = 30-31). Classification: Eucrite, monomict. Specimens: 14.2 g including one polished thin section at UWB. The remaining material is held by DPitt. | ||||||||||||||||||||||||||||
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) DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address) |
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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 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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