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| Northwest Africa 10933 | |||||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 10933 This is an OFFICIAL meteorite name. Abbreviation: NWA 10933 Observed fall: No Year found: 2015 Country: (Northwest Africa) Mass:  116.4 g | ||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 119 approved meteorites classified as CK4. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites | ||||||||||||||||||||||||||||||||
| Comments: | Approved 10 Dec 2016 | ||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 105:
Northwest Africa 10933 (NWA 10933) (Northwest Africa) Purchased: 2015 Classification: Carbonaceous chondrite (CK4) History: One stone weighing 116.2 g was found and subsequently purchased in Morocco in 2015. Don Cline and John Sinclair acquired the sample from a meteorite prospector at the Tucson Gem and Mineral Show in February 2016. Physical characteristics: The windowed sample is tabular in shape and has a few shallow regmaglypts. Sample 70% covered by a lightly weathered, dark-brown fusion crust which contains orange contraction cracks. The cut face shows a dark-green, friable interior with dark-gray-colored chondrules and dark-green clasts and magnetite. Petrography: Description and classification (A. Love, App): Sample is a breccia composed of lithic fragments that show chondritic texture, sparsely distributed (avg. dia. 484 μm) chondrules (many display igneous rims), fragments and rare CAIs in a recrystallized matrix. Sample lacks sulfide but contains abundant chromium magnetite, augite and rare clinoenstatite. Geochemistry: (A. Love, App) Olivine Fa31.0±0.7 (Fa29.1-32.2), N=12; Low-Ca pyroxene Fs23.1±2.5Wo0.8±0.1, N=9; Ca-pyroxene Fs13.6±0.1Wo44.2±5.6, N=2. Classification: Based on textural relationships and mineral compositions, dominance of olivine and presence of of Cr-magnetite, this is a CK4, S2, W2 carbonaceous chondrite. Specimens: PARI holds the 82.2 g main mass. A 20.8 g type specimen and one polished thin section are on deposit at App. | ||||||||||||||||||||||||||||||||
| Data from: MB105 Table 0 Line 0: |
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| Institutions and collections |
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013) PARI: Pisgah Astronomical Research Institute 1 Pari Dr Rosman, NC 28772, United States (institutional address; updated 13 Sep 2016) |
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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) | ||||||||||||||||||||||||||||||||