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Northwest Africa 15271 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 15271 This is an OFFICIAL meteorite name. Abbreviation: NWA 15271 Observed fall: No Year found: 2022 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 17 approved meteorites classified as LL3.15. [show all] Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||
Comments: | Approved 1 Oct 2022 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 111:
Northwest Africa 15271 (NWA 15271) (Northwest Africa) Purchased: 2022 Classification: Ordinary chondrite (LL3.15) History: Purchased in 2022 by Edwin Thompson from a meteorite dealer in Mauritania. Later purchased by Paul Stahura. Physical characteristics: Two weathered pieces (240.4 g and 165.6 g) with minor dark-brown fusion crust. Petrography: (D. Sheikh, Cascadia) Sample is a chondrite composed of well-defined chondrules (Average apparent diameter ~1.1±0.5 mm) containing both primary and devitrified glass, set within a mostly opaque matrix. Accessory phases identified include troilite and kamacite. Geochemistry: Olivine (Fa20.1±8.2, range Fa1.2-39.0, n=59), Cr2O3 in ferroan olivine (0.19±0.13 wt%, range 0.06-0.55, n=56), Low-Ca Pyroxene (Fs12.4±18.6Wo1.1±1.1, range Fs1.6-33.5Wo0.2-5.4, n=36). Classification: Ordinary Chondrite (LL3.15). LL group suggested from average chondrule diameter; subtype 3.15 estimated due to mean Cr2O3 value and standard deviation from ferroan olivines according to (Grossman and Brearley, 2005), similar to Y-791324. Specimens: 48.75 grams at Cascadia, main mass with Paul Stahura. | ||||||||||||||||||||||||||||||
Bibliography: |
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Data from: MB111 Table 0 Line 0: |
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Institutions and collections |
Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011) Thompson: Edwin Thompson, 5150 Dawn St., Lake Oswego, OR 97035, United States (private address) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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Geography: |
Statistics: This is 1 of 9128 approved meteorites from (Northwest Africa) (plus 1873 unapproved names) |