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Northwest Africa 15057 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 15057 This is an OFFICIAL meteorite name. Abbreviation: NWA 15057 Observed fall: No Year found: 2021 Country: (Northwest Africa) Mass: 6.4 kg | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 51 approved meteorites classified as CVox3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 20 Jun 2022 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 111:
Northwest Africa 15057 (NWA 15057) (Northwest Africa) Purchased: 2021 Dec Classification: Carbonaceous chondrite (CVox3) History: Purchased by Craig Zlimen in December 2021 from an Algerian dealer. Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-formed, unequilibrated chondrules (some with concentric rims, apparent diameter 1050±400 µm, N = 26) containing both fresh and devitrified glass together with relatively abundant CAI are set in a fine grained matrix (~40 vol.%, sepia brown to opaque in thin section) containing Cr-bearing magnetite, pentlandite, plagioclase and kamacite. Minerals in CAI include anorthite, spinel and gehlenite. Geochemistry: Olivine (Fa23.0±36.0, range Fa1.3-93.9, N = 6), low-Ca pyroxene (Fs1.4±0.6Wo0.8±0.3, range Fs0.7-2.1Wo0.3-1.1, N = 5), subcalcic diopside (Fs1.1Wo31.4), diopside (Fs0.7±0.0Wo45.7±0.6, range Fs0.7±0.0Wo45.3-46.1, N = 2), magnetite (Cr2O3 0.1-1.0 wt.%, N = 6). Classification: Carbonaceous chondrite (CVox3). Specimens: 21.4 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 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names) | ||||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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