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Northwest Africa 8750 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 8750 This is an OFFICIAL meteorite name. Abbreviation: NWA 8750 Observed fall: No Year found: 2014 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 391 approved meteorites classified as Eucrite-pmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 10 Feb 2015 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 104:
Northwest Africa 8750 (NWA 8750) (Northwest Africa) Purchased: 2014 Mar Classification: HED achondrite (Eucrite, polymict) History: Purchased by Darryl Pitt in March 2014 from a dealer in Zagora, Morocco. Petrography: (A. Irving and S. Kuehner, UWS) Fragmental breccia composed predominantly of eucritic crystalline debris (calcic plagioclase, exsolved pigeonite, ilmenite), some gabbroic eucrite clasts and ~5 vol.% diogenitic orthopyroxene grains. Pigeonite is brownish-yellow in thin section and plagioclase is polycrystalline. Small vugs containing calcite were noted, and barite is present in the altered matrix. Geochemistry: Low-Ca pyroxene (Fs56.6-57.0Wo7.0-7.6, FeO/MnO = 32-34, N = 3), high-Ca pyroxene (Fs30.1-31.1Wo39.6-38.8, FeO/MnO = 30-34, N = 3), diogenitic orthopyroxene (core Fs31.6Wo3.9, FeO/MnO = 34; rim Fs45.5Wo4.0, FeO/MnO = 36). Classification: Eucrite (polymict breccia). Specimens: 3.93 g including one polished thin section at UWB; the remainder is held by DPitt. | ||||||||||||||||||||||||||||
Data from: MB104 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012) 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. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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Geography: |
Statistics: This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |