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Northwest Africa 7854 (NWA 7854)
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 trolite. 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.
Source: MetBull – http://www.lpi.usra.edu/meteor/index.php