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Northwest Africa 13336 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13336 This is an OFFICIAL meteorite name. Abbreviation: NWA 13336 Observed fall: No Year found: 2020 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 4 Jul 2020 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 109:
Northwest Africa 13336 (NWA 13336) (Northwest Africa) Purchased: 2020 Classification: Carbonaceous chondrite (CR2) History: The meteorite was purchased from a meteorite dealer in Morocco. Physical characteristics: Light-brownish rock with some fusion crust. Petrography: The meteorite is a carbonaceous chondrite composed of abundant, often slightly flattened chondrules with an apparent mean diameter of about 800 µm and about 30-40% almost black matrix. Chondrules are mostly of type I but two type II chondrules with highly unequilibrated olivine were observed in the section studied. Some chondrules are metal-decorated typical of CR. Geochemistry: olivine in type I chondrules: Fa1.3±0.4, Cr2O3: 0.49±0.05 wt%, n=13; low-Ca pyroxene: Fs2.8±0.3Wo0.5±0.6, n=16; olivine in type II chondrules: Fa28.3±9.0 (Fa17.0-46.1, n=9). Matrix analyses yield an average total of 88.1±1.2 wt% (5 µm defocused beam, N=10) suggesting the presence of hydrous minerals. | ||||||||||||||||||||||||||||||
Data from: MB109 Table 0 Line 0: |
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Institutions and collections |
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Photos: |
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Geography: |
Statistics: This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |