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Northwest Africa 8436 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 8436 This is an OFFICIAL meteorite name. Abbreviation: NWA 8436 Observed fall: No Year found: 2013 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 272 approved meteorites classified as Eucrite-mmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 6 Jun 2014 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 103:
Northwest Africa 8436 (NWA 8436) (Northwest Africa) Purchased: 2013 Jun Classification: HED achondrite (Eucrite, monomict) History: Purchased in 2013 in Agadir Physical characteristics: Cut surface reveals a gray brecciated interior with abundant shock veins and melt pockets. Petrography: (J. Gattacceca, CEREGE) Brecciated ophitic to subophitic basalt. Main minerals are plagioclase and pyroxene, with typical grain size 500 μm and 1 mm, respectively. Accessory silica (most grains >200 μm), troilite, chromite, ilmenite, metal. Geochemistry: Orthopyroxene Fs61.2±0.5 Wo3.0±0.3, FeO/MnO = 33.6±2.3. Ca-pyroxene Fs24.9 Wo45.6, FeO/MnO = 35.1. Plagioclase An89.2 Or0.4 Magnetic susceptibility log χ = 2.60 (χ in 10-9 m3/kg) Classification: Achondrite (basaltic monomict eucrite). Moderate weathering. Specimens: 12 g in CEREGE, main mass with Labenne | ||||||||||||||||||||||||||||
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 29 Oct 2018) Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 2012) |
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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 1 of 8890 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |