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Northwest Africa 12829 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 12829 This is an OFFICIAL meteorite name. Abbreviation: NWA 12829 Observed fall: No Year found: 2019 Country: (Northwest Africa) Mass: 19 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 86 approved meteorites classified as CK3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CK chondrites, CK3 chondrites, and CV-CK clan chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 21 Sep 2019 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 108:
Northwest Africa 12829 (NWA 12829) (Northwest Africa) Purchased: 2019 Classification: Carbonaceous chondrite (CK3) History: The meteorite was purchased from a local meteorite dealer in Morocco. Physical characteristics: Several black fragments with some fusion crust. Petrography: The meteorite displays a dark brownish interior and is composed of several sharply defined chondrules (mean diameter about 900 μm) set into abundant recrystallized matrix. Olivine and low-Ca pyroxene are compositionally zoned in most chondrules and also in some matrix grains. Minor phases include intermediate plagioclase, Ca-pyroxene, and Fe,Ni-sulfides. Cr-rich magnetite is abundant; metal was not detected. Geochemistry: olivine: Fa24.6±11.9 (Fa1.1-33.6, FeO/MnO= 139±17, n=25); low-Ca pyroxene: Fs12.9±10.2Wo1.5±1.2 (Fs1.4-26.5Wo0.9-4.4, n=20); Ca-pyroxene: Fs1.7±0.1Wo33.4±1.2, n=5; feldspar: An61.1±1.3Ab37.7±1.2Or1.3±0.1, n=6 | ||||||||||||||||||||||||||||||
Data from: MB108 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. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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Geography: |
Statistics: This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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