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Northwest Africa 8644 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 8644 This is an OFFICIAL meteorite name. Abbreviation: NWA 8644 Observed fall: No Year found: 2002 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 12331 approved meteorites (plus 8 unapproved names) classified as L6. [show all] Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||
Comments: | Approved 15 Nov 2014 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 103:
Northwest Africa 8644 (NWA 8644) (Northwest Africa) Purchased: 2002 Feb Classification: Ordinary chondrite (L6) History: Purchased by Dick Pugh February 2002 as an "NWA meteorite" from a Moroccan trader at the Gem and Mineral show in Tucson. Donated to Cascadia in February, 2002. Physical characteristics: Two sides of the specimen display good fusion crust and thumbprints. Another side shows broken interior, which is weathered dark. Petrography: (K. Farley, A. Ruzicka, Cascadia) Granoblastic textured rock with poorly-defined chondrules found in thin section. Roughly 5% of the metal has been weathered. Geochemistry: Olivine (Fa25.5±0.3, N=12), low-Ca pyroxene (Fs21.5±0.5Wo1.8±0.3En76.6±0.5, N=10), feldspar (Ab82.1±0.8Or7.0±1.0An10.9±0.3, N=6). Classification: L6 chondrite based on mineral chemistry and texture. Specimens: Cascadia holds the entire sample which includes 50.6 g and 1 polished thin section. | ||||||||||||||||||||||||||||||
Data from: MB103 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. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Geography: |
Statistics: This is 1 of 9116 approved meteorites from (Northwest Africa) (plus 1873 unapproved names) |