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Northwest Africa 7854 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7854 This is an OFFICIAL meteorite name. Abbreviation: NWA 7854 Observed fall: No Year found: 2013 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 396 approved meteorites classified as Eucrite-pmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 29 May 2013 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 102:
Northwest Africa 7854 (NWA 7854) (Northwest Africa) Purchased: 2013 Classification: HED achondrite (Eucrite, polymict) Petrography: The light grayish rock consists of basaltic and melt-clasts set into a fine-grained clastic matrix dominated by calcic plagioclase and exsolved pyroxene. Accessories include SiO2, chromite, and troilite. Contains 2 to 3 vol% diogenitic material. Geochemistry: low-Ca px: Fs35.5-47.9Wo1.3-4; FeO/MnO=28-32; Ca-px: Fs18-32.2Wo24-44.7; FeO/MnO=25-31; clacic plagioclase: An85.3-92.2. | ||||||||||||||||||||||||||||
Data from: MB102 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. 102, MAPS 50, 1662, September 2015
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Photos: |
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Geography: |
Statistics: This is 1 of 9305 approved meteorites from (Northwest Africa) (plus 1873 unapproved names) |