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Northwest Africa 13337 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13337 This is an OFFICIAL meteorite name. Abbreviation: NWA 13337 Observed fall: No Year found: 2019 Country: (Northwest Africa) Mass: 467 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 270 approved meteorites classified as Mesosiderite. [show all] Search for other: Mesosiderites, Metal-rich meteorites | ||||||||||||||||||||||||||||
Comments: | Approved 4 Jul 2020 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 109:
Northwest Africa 13337 (NWA 13337) (Northwest Africa) Purchased: 2019 Classification: Mesosiderite History: The meteorite was purchased from a meteorite dealer in Morocco. Physical characteristics: Dark grayish rock without fusion crust. Petrography: The meteorite displays a grayish interior and is composed of silicate (about 50 vol%) and metallic (about 50 vol%) portions. The silicate fraction is predominantly composed of exsolved pyroxene, up to 2.5 mm sized compositionally zoned low-Ca pyroxene, and calcic plagioclase. Minor phases are silica, ilmenite, Ti-chromite, FeS, and merrillite. The metallic lithology consists of most abundant kamacite and some taenite. No olivine has been detected in the section studied. Geochemistry: compositionally zoned low-Ca pyroxene: Fs24.0±7.2Wo1.4±0.7 (Fs17.5-37.8Wo0.9-2.9, n=12, FeO/MnO=23-32); low-Ca pyroxene host to exsolutions: Fs39.3±0.9Wo3.1±0.4 (Fs38.2-40.9Wo2.5-3.7, n=13, FeO/MnO=20-23); Ca-pyroxene exsolutions: Fs17.6±0.6Wo42.9±0.6 (Fs15.9-18.1Wo42.1-44.7, n=12, FeO/MnO=16-18); calcic plagioclase: An91.3±2.2 (An86.1-93.6, n=14) | ||||||||||||||||||||||||||||
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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Geography: |
Statistics: This is 1 of 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names) | ||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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