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Northwest Africa 12760 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 12760 This is an OFFICIAL meteorite name. Abbreviation: NWA 12760 Observed fall: No Year found: 2017 Country: (Northwest Africa) Mass: 58.09 kg | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 334 approved meteorites classified as Lunar (feldsp. breccia). [show all] Search for other: Lunar meteorites | ||||||||||||||||||||||||||||||
Comments: | Approved 3 Aug 2019 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 108:
Northwest Africa 12760 (NWA 12760) (Northwest Africa) Find: 2017 Apr Classification: Lunar meteorite (feldspathic breccia) History: A single very large, uncrusted stone (58.090 kg) was found in April 2017 in Western Sahara or the Western Sahara/Algeria border region, and purchased by Darryl Pitt in June 2017 from a Mauritanian dealer Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed of mineral clasts of anorthite, olivine, orthopyroxene, exsolved pigeonite, unexsolved pigeonite and augite within a sparsely vesicular and partly glassy matrix containing troilite, magnesian ilmenite, chromite and minor secondary barite. Geochemistry: Olivine (Fa19.1-35.9, FeO/MnO = 88-97, N = 4), low-Ca pyroxene (Fs31.1-45.4Wo4.6-6.1, FeO/MnO = 50-56, N = 3), augite (Fs14.8Wo40.8, FeO/MnO = 38), pigeonite host in exsolved pyroxene (Fs38.4Wo12.7, FeO/MnO = 58), low-Ca pyroxene lamellae in exsolved pyroxene (Fs46.9-52.6Wo4.3-5.3, FeO/MnO = 57, N = 2), plagioclase (An96.4-97.2Or0.1, N = 2). Classification: Lunar (feldspathic breccia). Specimens: 20.1 g including a polished endcut 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) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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