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Northwest Africa 10176 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 10176 This is an OFFICIAL meteorite name. Abbreviation: NWA 10176 Observed fall: No Year found: 2012 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 544 approved meteorites classified as CM2. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 26 May 2016 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 105:
Northwest Africa 10176 (NWA 10176) (Northwest Africa) Purchased: 2012 Sep Classification: Carbonaceous chondrite (CM2) History: Purchased by John Curchin in September 2012 from a Moroccan dealer at the Denver Show. Petrography: (A. Irving and S. Kuehner, UWS) Small chondrules, mineral fragments and sparse CAI are set in a reddish-brown matrix containing relatively coarse-grained, platy cronstedtite, kamacite spheres, taenite and minor barite. Geochemistry: Olivine (Fa2.3-57.9, N = 3), orthopyroxene (Fs0.9-1.7Wo1.1-0.5, N = 3), subcalcic augite (Fs1.1-1.5Wo32.1-38.3, N = 2). Oxygen isotopic composition (J. Gattacceca, C. Sonzogni, CEREGE) from analysis of one 1.5 mg aliquot of a powdered 20 mg bulk sample is δ17O=1.51‰, δ18O=9.27‰ , Δ17O=-3.33‰ (linearized, slope 0.5247, analytical uncertainties 0.08‰, 0.12‰, 0.03‰ respectively) Classification: Carbonaceous chondrite (CM2). Specimens: 3.6 g including one polished thin section at UWB. The remainder is held by Mr. J. Curchin. | ||||||||||||||||||||||||||||||
Data from: MB105 Table 0 Line 0: |
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Plots: | O isotopes: | ||||||||||||||||||||||||||||||
Institutions and collections |
CEREGE: CEREGE
BP 80
Avenue Philibert, Technopole de l'Arbois
13545 Aix-en-Provence Cedex 4
France, France (institutional address; updated 29 Oct 2018) UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012) |
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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 7579 approved meteorites from (Northwest Africa) (plus 1969 unapproved names) |