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Northwest Africa 13310 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13310 This is an OFFICIAL meteorite name. Abbreviation: NWA 13310 Observed fall: No Year found: 2020 Country: (Northwest Africa) Mass: 441 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 226 approved meteorites classified as Eucrite-br. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 13 Jun 2020 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 109:
Northwest Africa 13310 (NWA 13310) (Northwest Africa) Purchased: 2020 Jan Classification: HED achondrite (Eucrite, brecciated) History: Purchased by Darryl Pitt in January 2020 from a dealer in Marrakech, Morocco. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed of mostly gabbroic eucrite clasts plus some clasts with fine grained, intersertal texture within a matrix of related crystalline debris. Minerals are exsolved pigeonite (pale orange in thin section) and calcic plagioclase (exhibiting undulose extinction to polycrystalline structure) together with accessory silica polymorph, ilmenite, Ti-Al-chromite, troilite and zircon, plus secondary calcite, barite and iron hydroxides. Geochemistry: Low-Ca pyroxene (Fs59.4-61.8Wo4.7-1.7, FeO/MnO = 30-33, N = 5), high-Ca pyroxene (Fs26.5-27.8Wo43.0-43.9, FeO/MnO = 30-32, N = 5), olivine grain (Fa66.1-66.5, FeO/MnO = 46, N = 2), plagioclase (An88.0-91.8Or0.4-0.3, N = 4). Classification: Eucrite (breccia). Possibly paired with NWA 13314. Specimens: 27.0 g including one polished thin section at UWB; remainder with DPitt. | ||||||||||||||||||||||||||||||
Data from: MB109 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. 109, in preparation (2020)
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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: |
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