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Northwest Africa 7223 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7223 This is an OFFICIAL meteorite name. Abbreviation: NWA 7223 Observed fall: No Year found: 2011 Country: (Northwest Africa) Mass: 40 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 407 approved meteorites classified as Eucrite-pmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 11 Dec 2013 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 102:
Northwest Africa 7223 (NWA 7223) (Northwest Africa) Purchased: 2011 Classification: HED achondrite (Eucrite, polymict) Petrography: The meteorite is partly covered with black fusion crust and shows a light greyish interior, with abundant whitish plagioclase grains. It shows a typical basaltic texture with exsolved pyroxene and often lath-shaped plagioclase. Rarely lithic clasts of differently textured basaltic lithologies and dark melt clast are encountered. Minor phases include chromite, SiO2, and FeNi metal. Contains ~3% diogenitic material. Geochemistry: Ca-poor pyroxene: Fs59.1-65.1Wo1.5-9.7, FeO/MnO=30-34; Ca-rich pyroxene: Fs27.7-33.9Wo40.6-42.7, FeO/MnO=29-37; calcic plagioclase: An89 (range An85.3-90). | ||||||||||||||||||||||||||||
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) Stehlik: Harald Stehlik, 1220 Wien, Austria (private address) |
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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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Geography: |
Statistics: This is 1 of 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names) | ||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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