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Northwest Africa 8476 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 8476 This is an OFFICIAL meteorite name. Abbreviation: NWA 8476 Observed fall: No Year found: 2013 Country: Morocco Mass: 1570 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 522 approved meteorites classified as diogenite. [show all] Search for other: Achondrites, Diogenites, and HED achondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 18 Jul 2014 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 103:
Northwest Africa 8476 (NWA 8476) Tan Tan, Morocco Purchased: 2013 Jun 4 Classification: HED achondrite (Diogenite) History: Found in the Tan Tan region, Morocco, and purchased in Erfoud in June 2013. Physical characteristics: Many fragments consisting of a homogeneous assemblage of mm sized green minerals Petrography: (C. Cournède, J. Gattacceca, CEREGE): Main minerals are orthopyroxene with typical grain size 2 to 5 mm. Accessory chromite, silica. Metal is observed as aligned droplets (25 μm) in pyroxene crystals. Geochemistry: Orthopyroxene Fs28.5±0.4 Wo3.0±0.2 (n=5). FeO/MnO=31.3±3.1. Chromite Cr#=72%. Magnetic susceptibility log χ = 2.90 (χ in 10-9 m3/kg). Classification: Diogenite. Moderate weathering. Specimens: 20.5 g at CEREGE. Main mass with P. Thomas. | ||||||||||||||||||||||||||||||
Data from: MB103 Table 0 Line 0: |
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Institutions and collections |
CEREGE: CEREGE
BP 80
Avenue Philibert, Technopole de l'Arbois
13545 Aix-en-Provence Cedex 4
France, France (institutional address; updated 10 Jun 2023) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Geography: |
Statistics: This is the only approved meteorite from Tan Tan, Morocco This is 1 of 2068 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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