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Northwest Africa 10996 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 10996 This is an OFFICIAL meteorite name. Abbreviation: NWA 10996 Observed fall: No Year found: 2015 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 183 approved meteorites classified as CR2. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), and CR chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 17 Dec 2016 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 105:
Northwest Africa 10996 (NWA 10996) (Northwest Africa) Purchased: 2015 Classification: Carbonaceous chondrite (CR2) History: Purchased by Jay Piatek in Morocco, 2015. Physical characteristics: Weathered exterior. A broken surface reveals dark groundmass with some oxidation. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows numerous type I chondrules; two type II chondrules were observed in the mount. Some chondrules are armored with metal/oxide typical of CR. Much of the metal, which makes up 5-10% of the meteorite, has been oxidized. Gehlenite-akermanite, Al-diopside were observed. Fine grained matrix was found throughout. Geochemistry: (C. Agee and N. Muttik, UNM) Forsterite Fa2.3±1.0, Cr2O3=0.51±0.21 wt%, n=14; enstatite Fs3.5±1.5Wo0.7±0.3, n=15; ferroan olivine in the type II chondrules Fa20.3-43.0, n=4. Classification: Carbonaceous chondrite (CR2). Specimens: 20.8 g including a probe mount on deposit at UNM, Jay Piatek holds the main mass. | ||||||||||||||||||||||||||||||
Data from: MB105 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. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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Geography: |
Statistics: This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |