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Northwest Africa 11481 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11481 This is an OFFICIAL meteorite name. Abbreviation: NWA 11481 Observed fall: No Year found: 2016 Country: Mauritania Mass: 4.04 kg | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 522 approved meteorites classified as Diogenite. [show all] Search for other: Achondrites, Diogenites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 21 Nov 2017 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 106:
Northwest Africa 11481 (NWA 11481) Mauritania Purchased: 2016 Classification: HED achondrite (Diogenite) History: Purchased in September, 2016 in Mauritania. Recovered in Spring 2016 from the Dayet el Aam area in Mauritania, in the border region with Algeria south of Tindouf. Physical characteristics: One stone with patches of glossy-black fusion covering 85% of the exterior. Saw cut reveals a fragmental breccia with light-green clasts set in a light gray groundmass. Petrography: Microprobe examination of a polished mount shows numerous pyroxene fragments. Ubiquitous troilite and chromite were observed. Plagioclase, silica, olivine and metal not detected. Geochemistry: (C. Agee, UNM) low-Ca pyroxene Fs24.3±9.5Wo3.5±1.4, Fe/Mn=28±2, n=11; high-Ca pyroxene Fs48.7±3.7Wo20.5±11.1, Fe/Mn=30±2, n=3. Classification: Diogenite Specimens: 32.8 g including a probe mounts on deposit at UNM, DPitt holds the main mass. | ||||||||||||||||||||||||||||
Data from: MB106 Table 0 Line 0: |
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Institutions and collections |
UNM: Institute of Meteoritics
MSC03 2050
University of New Mexico
Albuquerque NM 87131-1126
USA, United States; Website (institutional address; updated 12 Feb 2015) DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address) |
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Catalogs: |
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References: | Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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Geography: |
Statistics: This is 1 of 221 approved meteorites from Mauritania (plus 2 unapproved names) (plus 2 impact craters) | ||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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