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Northwest Africa 12931 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 12931 This is an OFFICIAL meteorite name. Abbreviation: NWA 12931 Observed fall: No Year found: 2016 Country: (Northwest Africa) Mass: 2.06 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 2019 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 108:
Northwest Africa 12931 (NWA 12931) (Northwest Africa) Purchased: 2016 Classification: HED achondrite (Diogenite) History: Purchased Nov 2016 by Dustin Dickens in Mauritania from anonymous dealer. Physical characteristics: Single stone with desert weathered exterior. Saw cut and broken surfaces reveal a light-colored interior. Friable. Petrography: (C. Agee, UNM) This meteorite is an equilibrated orthopyroxenite with ~95% pyroxene, and minor amounts of silica, chromite and troilite. No olivine or plagioclase were detected. Geochemistry: (C. Agee, UNM) Low-Ca pyroxene Fs27.5±0.3Wo3.6±0.3, Fe/Mn=26±1, n=12. Classification: Diogenite Specimens: 21.6 g including a probe mount on deposit at UNM, Dustin Dickens holds the main mass. | ||||||||||||||||||||||||||||
Data from: MB108 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) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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Photos: |
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Geography: |
Statistics: This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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