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| Northwest Africa 11090 | |||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 11090 This is an OFFICIAL meteorite name. Abbreviation: NWA 11090 Observed fall: No Year found: 2016 Country: Mauritania Mass:  955 g | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 71 approved meteorites classified as L6-melt breccia. [show all] Search for other: L chondrites, L chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||
| Comments: | Approved 26 Feb 2017 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 106:
Northwest Africa 11090 (NWA 11090) Mauritania Find: 2016 Classification: Ordinary chondrite (L6, melt breccia) Physical characteristics: A dark dull stone without fusion crust. Cut surface reveals a brecciated texture, with chondrule-bearing clasts set in a dark matrix. Petrography: Ordinary chondrite clasts (to cm) set in a melt matrix with microcrystalline quench texture and abundant FeS/metal droplets. Most clasts are equilibrated, with plagioclase size to 200 μm. Some clasts are shock darkened, with abundant troilite veinlets, larger plagioclase (to 300 μm), and large chromite grains (to 300 μm). Geochemistry: Clasts: Olivine Fa24.8±0.02 (N=2), Orthopyroxene Fs20.5Wo0.7 (N=1). Shock darkened clasts: Olivine Fa24.3±0.05 (N=2), Orthopyroxene Fs21.0Wo1.4 (N=1). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.99. Classification: L6 melt breccia Specimens: 15 g and a polished section at CEREGE | ||||||||||||||||||||||||||||||
| Data from: MB106 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) |
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| References: | Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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Geography:
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Statistics: This is 1 of 192 approved meteorites from Mauritania (plus 1 unapproved name) (plus 2 impact craters) | ||||||||||||||||||||||||||||||