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Northwest Africa 11928 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11928 This is an OFFICIAL meteorite name. Abbreviation: NWA 11928 Observed fall: No Year found: 2018 Country: (Northwest Africa) Mass: 235 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 595 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 15 Sep 2018 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 107:
Northwest Africa 11928 (NWA 11928) (Northwest Africa) Purchased: 2018 Classification: HED achondrite (Eucrite) History: The meteorite was purchased from a local meteorite dealer in Erfoud, Morocco. Physical characteristics: Grayish individual partly covered with fusion crust. Petrography: The meteorite is a fine-grained polymict breccia with basaltic and black melt clasts set into a clastic mineral matrix. Dominant minerals are exsolved pyroxene and calcic plagioclase with average grain sizes of about 200 μm. Minor phases include silica, chromite, FeS, fayalite, and ilmenite. No metallic Fe has been found. Geochemistry: low-Ca pyroxene: Fs35.6±2.1Wo6.3±0.8 (Fs32.6-38.8Wo5.5-8.6, n=15, FeO/MnO=28-33); Ca-pyroxene: Fs45.0±5.7Wo31.5±4.8 (Fs43.7-46.1Wo25.4-36.6, n=11, FeO/MnO=29-35); calcic plagioclase: An93.1±3.3 (An86.4-96.4, n=12) | ||||||||||||||||||||||||||||
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) |
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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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