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Northwest Africa 11771 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11771 This is an OFFICIAL meteorite name. Abbreviation: NWA 11771 Observed fall: No Year found: 2014 Country: (Northwest Africa) Mass: 50 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 520 approved meteorites classified as Diogenite. [show all] Search for other: Achondrites, Diogenites, and HED achondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 11 May 2018 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 107:
Northwest Africa 11771 (NWA 11771) (Northwest Africa) Purchased: 2014 Classification: HED achondrite (Diogenite) History: The meteorite was purchased from a local meteorite dealer in Zagora, Morocco. Physical characteristics: Greyish individual partly covered with fusion crust Petrography: Monomict breccia predominantly composed of blocky up to 2 mm sized orthoproxenes and more fine-grained cataclastic interstitial regions. Minor phases include feldspar, olivine, silica, chromite, and FeNi metal. No metallic iron has been detected. Geochemistry: low-Ca pyroxene: Fs29.2±0.3Wo4.2±0.2 (Fs28.7-29.5Wo3.9-4.6, n=18, FeO/MnO=27-32); olivine: Fa37.7, n=1, FeO/MnO=54; calcic plagioclase: An92.7±0.4 (An92.2-93.4, n=5) | ||||||||||||||||||||||||||||||
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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