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Northwest Africa 13982 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13982 This is an OFFICIAL meteorite name. Abbreviation: NWA 13982 Observed fall: No Year found: 2020 Country: (Northwest Africa) Mass: 1535 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 34 approved meteorites classified as R3-6. [show all] Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3) | ||||||||||||||||||||||||||||||
Comments: | Approved 18 Jun 2021 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 110:
Northwest Africa 13982 (NWA 13982) (Northwest Africa) Purchased: 2020 Jun Classification: Rumuruti chondrite (R3-6) History: Purchased in Agadir,Morocco by Aziz Habibi in June 2020. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Very fresh specimen with no staining at all by secondary iron oxyhydroxides. Breccia composed of discrete, well-formed chondrules (both unequilibrated and equilibrated, mean apparent diameter ~500 µm) plus lithic clasts of Type 4 and Type 6 (with triple grain junction texture and no chondrules) set in a much finer grained matrix containing pentlandite, troilite and Ti-chromite. Pentlandite contains a variety of exotic PGE-rich accessory phases, including NiGeFePt. Pd-rich NiGeFePt and AuCuFeSn alloys. Geochemistry: Olivine in unequilibrated Type 3 chondrules (Fa28.6±12.9, range Fa12.6-41.8, N = 5), olivine in equilibrated Type 4 and Type 7 clasts (Fa38.9±0.3, range Fa38.7-39.3, N = 3), low-Ca pyroxene (Fs15.9±0.8Wo0.5±0.4, range Fs15.3-16.5Wo0.2-0.8, N = 2), pigeonite (Fs19.6Wo7.6), subcalcic augite (Fs28.3Wo22.3), augite (Fs16.0Wo38.2), plagioclase (Ab68.8An29.3Or1.9). Classification: R3-6 chondrite breccia. This specimen is notable for its freshness and the variety of accessory PGE-rich alloy phases. Specimens: 24.5 g including one polished thin section at UWB; remainder with Mr. A. Habibi. | ||||||||||||||||||||||||||||||
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 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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