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Northwest Africa 13248 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13248 This is an OFFICIAL meteorite name. Abbreviation: NWA 13248 Observed fall: No Year found: 2018 Country: Niger Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 32 approved meteorites classified as H5-melt breccia. [show all] Search for other: H chondrites, H chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||
Comments: | Approved 28 Mar 2020 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 109:
Northwest Africa 13248 (NWA 13248) Niger Purchased: 2018 Mar Classification: Ordinary chondrite (H5, melt breccia) History: Found with many other similar stones in the vicinity of Akokan, Niger, and purchased by Aziz Habibi in March 2018 from a dealer in Niger. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) The specimen consists of H5 lithic clasts within a much finer grained matrix (composed of fine, lath-like silicate grains and spherical opaques). Lithic clasts are composed of sparse, relatively small equilibrated chondrules in recrystallized matrices containing relatively abundant metal. Minerals are equilibrated olivine, low-Ca pyroxene, sodic plagioclase, kamacite, taenite, low-Ti chromite and troilite. Clasts have shock stage S2. Geochemistry: Olivine (Fa18.5±0.1 (range Fa18.4-18.6, N = 4), low-Ca pyroxene (Fs16.1±0.4Wo1.9±0.2 (range Fs15.5-16.4Wo2.1-1.6, N = 4). Classification: Ordinary chondrite (H5-melt breccia). Paired with Tassédet 004, NWA 12923, NWA 12924 and other material from the same strewnfield. Specimens: 38.7 g including one polished thin section at UWB; remainder with Mr. A. Habibi. | ||||||||||||||||||||||||||||||
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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012) |
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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 104 approved meteorites from Niger (plus 5 unapproved names) |