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Northwest Africa 15374 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 15374 This is an OFFICIAL meteorite name. Abbreviation: NWA 15374 Observed fall: No Year found: 2020 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 24 approved meteorites classified as Lunar (melt breccia). [show all] Search for other: Lunar meteorites | ||||||||||||||||||||||||||||||
Comments: | Approved 4 Dec 2022 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 111:
Northwest Africa 15374 (NWA 15374) (Northwest Africa) Purchased: 2020 Classification: Lunar meteorite (melt breccia) History: Purchased by Mark Lyon from a meteorite dealer in northwest Africa in 2020. Physical characteristics: Single stone with minor fusion crust. Petrography: (D. Sheikh, Cascadia) Specimen is a polymict breccia comprised of sub-angular to sub-rounded mm-sized lithic and monomineralic clasts (up to ~3 mm) set within a dark, melt-rich matrix. Lithic clast lithologies identified include: anorthosites, impact-melt-rich clasts, dunites, olivine gabbronorites, norites, and noritic anorthosites. Accessory mineral phases include ilmenite and chromite (some Ti-bearing). Geochemistry: Olivine (Fa33.9±14.4, range Fa5.9-48.4, Fe/Mn=89±12, n=14), Low-Ca Pyroxene (Fs22.6±9.3Wo3.3±0.4, range Fs14.7-40.6Wo2.6-3.9, Fe/Mn=50±5, n=7), Pigeonite (Fs31.3±8.6Wo14.7±5.1, range Fs19.3-50.6Wo7.1-23.4, Fe/Mn=50±4, n=19), High-Ca Pyroxene (Fs25.6±9.2Wo33.0±6.2, range Fs13.3-37.3Wo26.7-41.7, Fe/Mn=47±12, n=5), Calcic Plagioclase (An96.4±0.6, range An95.4-97.8, n=24). Classification: Lunar (melt breccia). Specimens: 20.35 g at Cascadia, main mass with Mark Lyon. | ||||||||||||||||||||||||||||||
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) |
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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 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names) |