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Northwest Africa 11381 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11381 This is an OFFICIAL meteorite name. Abbreviation: NWA 11381 Observed fall: No Year found: 2016 Country: (Northwest Africa) Mass: 46.7 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 406 approved meteorites classified as Eucrite-pmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 15 Aug 2017 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 106:
Northwest Africa 11381 (NWA 11381) (Northwest Africa) Purchased: 2016 Feb Classification: HED achondrite (Eucrite, polymict) History: Purchased by Eric Twelker in February 2016 from a Moroccan dealer at the Tucson Gem and Mineral Show. Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of sparse lithic eucrite clasts (with fine-intersertal, microgabbroic and diabasic textures) and related crystalline debris, plus ~5 vol.% polycrystalline diogenite and diogenitic orthopyroxene clasts, in a finer matrix. Minerals include exsolved pigeonite, calcic plagioclase, silica polymorph, ilmenite and chromite. Geochemistry: Diogenitic orthopyroxene (Fs27.7Wo2.0, FeO/MnO = 38), orthopyroxene host (Fs42.9-48.8Wo2.6-1.7, FeO/MnO = 28-36, N = 2), clinopyroxene exsolution lamellae (Fs18.2-20.1Wo44.1-42.1, FeO/MnO = 25, N = 2), plagioclase (An89.9-92.2Or0.5-0.4, N = 2). Classification: Eucrite (polymict breccia). Specimens: 9.4 g including one polished thin section at UWB; remainder with Twelker. | ||||||||||||||||||||||||||||
Data from: MB106 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) Twelker: Eric Twelker, P.O. Box 844, Port Townsend, WA 98368, United States; Website (private address; updated 1 Dec 2014) |
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Catalogs: |
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References: | Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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Geography: |
Statistics: This is 1 of 9589 approved meteorites from (Northwest Africa) (plus 1869 unapproved names) | ||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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