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Northwest Africa 13507 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13507 This is an OFFICIAL meteorite name. Abbreviation: NWA 13507 Observed fall: No Year found: 2020 Country: (Northwest Africa) Mass: 259 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 93 approved meteorites classified as Lodranite. [show all] Search for other: Acapulcoite-lodranite family, Lodranites, and Primitive achondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 23 Jan 2021 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 110:
Northwest Africa 13507 (NWA 13507) (Northwest Africa) Purchased: 2020 Jun Classification: Primitive achondrite (Lodranite) History: Purchased by Sun-Chung Yang and Juan Chen in June 2020 from an Algerian dealer. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed of some lithic clasts with protogranular texture (grainsize up to 4 mm) plus related disaggregated crystalline debris in a very sparse fine grained matrix. Major minerals are olivine, low-Ca pyroxene (exhibiting polysynthetic twinning) and augite, accompanied by accessory Fe metal (partially altered to chlorine-bearing hydroxides), Cr-bearing troilite and small grains of schreibersite. Geochemistry: Olivine (Fa9.1-12.3, FeO/MnO = 16-23, N = 5), low-Ca pyroxene (Fs10.5-10.7Wo4.7-4.8, FeO/MnO = 13-14, N = 5), augite (Fs6.2-6.4Wo37.2-37.7, FeO/MnO = 10-11, N = 4). Classification: Lodranite (breccia). Specimens: 29.4 g including one polished thin section at UWB; remainder with Mr. S.-C. Yang and Mr. J. Chen. | ||||||||||||||||||||||||||||||
Data from: MB110 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) |
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Catalogs: |
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References: | Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Geography: |
Statistics: This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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