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Northwest Africa 15000 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 15000 This is an OFFICIAL meteorite name. Abbreviation: NWA 15000 Observed fall: No Year found: 2021 Country: (Northwest Africa) Mass: 1700 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 408 approved meteorites classified as Eucrite-pmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 23 Jul 2022 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 111:
Northwest Africa 15000 (NWA 15000) (Northwest Africa) Purchased: 2021 Classification: HED achondrite (Eucrite, polymict) History: Purchased by Craig Zlimen in 2021 from an Algerian dealer. Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Breccia composed of a variety of lithic eucrite clasts plus related crystalline debris and minor diogenitic orthopyroxene (<10 vol.%) within a fine grained matrix. Textures of lithic clasts include fine intergranular, subophitic, diabasic, gabbroic and very fine-grained equigranular (or granulitic). Minerals are low-Ca pyroxene, unexsolved pigeonite (some compositionally zoned), calcic plagioclase, subcalcic augite, augite, silica polymorph, chromite, ilmenite and troilite, plus rare fayalite and Fe metal. Geochemistry: Diogenitic orthopyroxene (Fs20.0-22.0Wo0.9-2.6, FeO/MnO = 27-38, N = 3; Fs27.8-36.9Wo3.2-5.7, FeO/MnO = 27-40, N = 4), low-Ca pyroxene (Fs43.7-55.8Wo1.5-5.2, FeO/MnO = 30-33, N = 8), pigeonite (Fs52.1Wo10.1; Fs43.9Wo17.1; FeO/MnO = 30-32; N = 2), subcalcic augite (Fs39.2Wo22.9, FeO/MnO = 30), augite (Fs26.0Wo40.5, FeO/MnO = 29), plagioclase (An80.2-92.9Or1.1-0.2, N = 5). Classification: Eucrite (polymict breccia). Specimens: 24.7 g including one polished thin section at UWB; remainder with Mr. C. Zlimen. | ||||||||||||||||||||||||||||
Data from: MB111 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) UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023) BrownU: Joseph Boesenberg Brown University Dept of Earth, Environmental and Planetary Sciences (DEEPS) 324 Brook Street Providence, RI 02912 , United States (institutional address; updated 4 Jan 2024) |
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Catalogs: |
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References: | Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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Photos: |
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Geography: |
Statistics: This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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