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Northwest Africa 11762 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11762 This is an OFFICIAL meteorite name. Abbreviation: NWA 11762 Observed fall: No Year found: 2014 Country: (Northwest Africa) Mass: 42 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 226 approved meteorites classified as Eucrite-br. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 11 May 2018 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 107:
Northwest Africa 11762 (NWA 11762) (Northwest Africa) Purchased: 2014 Classification: HED achondrite (Eucrite, brecciated) History: The meteorite was purchased from a local meteorite dealer in Zagora, Morocco. Physical characteristics: Small dark greyish individual with some fusion crust. Petrography: The meteorite is a fragmental breccia composed of up to 5 mm sized basaltic clasts and dark impact melt clasts set into a fine-grained clastic matrix. Basaltic clasts and matrix are dominantly composed of exsolved pyroxene and plagioclase grains of variable grain sizes ranging from about 20 to 600 µm. Several matrix pyroxenes display magmatic zoning. Minor phases include ilmenite, pyrrhotite, silica, apatite, and metallic iron. Geochemistry: low-Ca pyroxene Fs42.3±10.3Wo3.9±1.2 (Fs20.9-51.3Wo2.0-5.7, n=15, FeO/MnO=31-47); Ca-pyroxene: Fs25.2±1.0Wo39.6±1.4 (Fs23.2-27.6Wo37.1-42.1, n=14, FeO/MnO=30-35); calcic plagioclase: An90.2±1.5 (An87.5-92.5, n=14) | ||||||||||||||||||||||||||||
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) Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address) |
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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 9589 approved meteorites from (Northwest Africa) (plus 1869 unapproved names) | ||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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