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Northwest Africa 11831 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11831 This is an OFFICIAL meteorite name. Abbreviation: NWA 11831 Observed fall: No Year found: 2018 Country: (Northwest Africa) Mass: 65 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 37 approved meteorites classified as LL3-6. [show all] Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||
Comments: | Approved 4 Jul 2018 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 107:
Northwest Africa 11831 (NWA 11831) (Northwest Africa) Purchased: 2018 Classification: Ordinary chondrite (LL3-6) History: The meteorite was purchased from a local meteorite dealer in Morocco. Physical characteristics: Dark greyish individual with some fusion crust. Petrography: The meteorite is a chondritic breccia consisting of clastic LL3 type matrix with embedded up to 2 mm sized LL6 clasts. Plagioclase grain size in type 6 clasts is about 60 µm. Chondrules have a mean diameter of about 0.8 mm. Geochemistry: type 3 lithology: olivine: Fa14.9±8.5 (Fa5.0-31.9, n = 11); pyroxene: Fs11.9±7.6Wo0.8±0.9 (Fs2.0-24.7Wo0.3-4.6, n = 21); type 6 lithology: olivine: Fa30.7±0.1, n=12; pyroxene: Fs25.0±0.2Wo2.1±0.6, n=13 | ||||||||||||||||||||||||||||||
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 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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