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Northwest Africa 12627 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 12627 This is an OFFICIAL meteorite name. Abbreviation: NWA 12627 Observed fall: No Year found: 2019 Country: (Northwest Africa) Mass: 701 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 407 approved meteorites classified as Eucrite-pmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 21 Nov 2019 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 108:
Northwest Africa 12627 (NWA 12627) (Northwest Africa) Purchased: 2019 Feb Classification: HED achondrite (Eucrite, polymict) History: Purchased in February 2019 by Darryl Pitt from a Mauritanian dealer. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia containing some lithic eucrite clasts (with diabasic, fine-intersertal and granulitic textures) but mostly composed of related crystalline debris together with rare diogenitic orthopyroxene set in a finer grained matrix containing rare kamacite. Eucritic material consists of exsolved pigeonite, calcic plagioclase, ferroan pigeonite, silica polymorph, fayalite, ilimenite, troilite and baddeleyite. Geochemistry: Augite host (Fs36.3Wo36.4 and Fs40.4Wo36.1, FeO/MnO = 33 and 35; N = 2), ferroan pigeonite (Fs57.3Wo8.1 and Fs58.9Wo10.7, FeO/MnO = 35 and 37, N =2), orthopyroxene host (Fs62.8Wo4.6, FeO/MnO = 37), diogenitic orthopyroxene (Fs25.1Wo2.7, FeO/MnO = 31), fayalite (Fa82.6, FeO/MnO = 45), plagioclase (An89.8-90.8Or0.3, N = 2). Classification: Eucrite (polymict breccia). Specimens: 24.5 g including one polished thin section at UWB; remainder with DPitt. | ||||||||||||||||||||||||||||||
Data from: MB108 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) WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011) 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. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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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: |
This lists important revisions made to data for this record.
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