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Northwest Africa 8365 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 8365 This is an OFFICIAL meteorite name. Abbreviation: NWA 8365 Observed fall: No Year found: 2014 Country: (Northwest Africa) Mass: 319 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 279 approved meteorites classified as Eucrite-mmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 25 Nov 2014 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 103:
Northwest Africa 8365 (NWA 8365) (Northwest Africa) Purchased: 2014 Mar Classification: HED achondrite (Eucrite, monomict) History: Purchased in March 2014 by John Higgins from a dealer in Agadir, Morocco. Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of clasts of gabbroic eucrite and related crystalline debris. Pale clove-brown exsolved pigeonite grains have wavy exsolution lamellae and calcic plagioclase is polycrystalline. Portions of the matrix are vesicular and consist mainly of very fine grained pigeonite and calcic plagioclase. Accessory minerals include silica polymorph, Ti-bearing chromite, ilmenite, troilite and secondary barite. Geochemistry: Orthopyroxene host (Fs58.7-58.9Wo3.4-3.3, FeO/MnO = 31, N = 3), clinopyroxene exsolution lamellae (Fs26.6-27.6Wo42.3-41.4, FeO/MnO = 30-31, N = 3), matrix quench pigeonite (Fs61.7Wo17.3). Classification: Eucrite (breccia, gabbroic). This specimen is likely paired with NWA 7989 and other such stones based on close similarities in lithology, shock and style of weathering. Specimens: 23.5 g including one polished thin section at UWB. The remainder is held by J. Higgins. | ||||||||||||||||||||||||||||
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) |
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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) | ||||||||||||||||||||||||||||
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Revision history: |
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