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Northwest Africa 15322 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 15322 This is an OFFICIAL meteorite name. Abbreviation: NWA 15322 Observed fall: No Year found: 2021 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 272 approved meteorites classified as Eucrite-mmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 1 Oct 2022 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 111:
Northwest Africa 15322 (NWA 15322) (Northwest Africa) Purchased: 2021 Classification: HED achondrite (Eucrite, monomict) History: Purchased from Adrar Algeria in 2021 by Edwin Thompson; subsequently acquired by Paul Stahura. Physical characteristics: One stone with dark-brown fusion crust. Petrography: (D. Sheikh, Cascadia) Sample is a breccia predominantly comprised of mm-sized, sub-angular basaltic clasts (most containing exsolved augite) and mineral fragments set within a dark, fine-grained matrix of the same composition containing accessory Cr-spinel, ilmenite, and SiO2-rich glass. Geochemistry: Low-Ca Pyroxene (Fs63.0±1.2Wo2.6±0.6, range Fs60.4-65.2Wo2.0-4.6, Fe/Mn=31±1, n=23), Augite (Fs28.6±0.6Wo42.1±0.3, range Fs27.4-29.3Wo41.5-42.9, Fe/Mn=30±2, n=19), Calcic Plagioclase (An89.2±1.0, range An86.8-91.2, n=21). Classification: Achondrite (eucrite, monomict breccia). Specimens: 35.7 g at Cascadia, main mass with Paul Stahura. | ||||||||||||||||||||||||||||
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 9116 approved meteorites from (Northwest Africa) (plus 1873 unapproved names) |