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Northwest Africa 12286 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 12286 This is an OFFICIAL meteorite name. Abbreviation: NWA 12286 Observed fall: No Year found: 2018 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 199 approved meteorites classified as CK5. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 11 Dec 2018 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 107:
Northwest Africa 12286 (NWA 12286) (Northwest Africa) Purchased: 2018 Classification: Carbonaceous chondrite (CK5) History: The meteorite was purchased from a local meteorite dealer in Morocco. Physical characteristics: Grayish to slightly greenish individual lacking any fusion crust. Petrography: The meteorite displays a greyish to greenish interior and is predominantly composed of recrystallized Fe-rich olivine dominated matrix with scattered well defined chondrules. Cr-rich magnetite is abundant. More minor phases include intermediate plagioclase, low-Ca pyroxene, Ca-pyroxene and troilite; metal was not detected. Geochemistry: olivine: Fa29.9±0.5, n=14, FeO/MnO=110.5±8.4; low-Ca pyroxene: Fs25.7±0.3Wo0.8±0.1, n=3; Ca-pyroxene: Fs7.0±0.4Wo47.5±0.3, n=3 | ||||||||||||||||||||||||||||||
Data from: MB107 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. 107, MAPS 55, 460-462
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Geography: |
Statistics: This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |