Northwest Africa 2286 2.7g
Achondrite (olivine-rich diogenite)
A single stone of 82 g was found 2003 by an anonymous finder in the Occidental Sahara and purchased in 2003 in Morocco. Classification and mineralogy (A. Greshake, MNB): is dominated by large blocky orthopyroxene crystals and ~20% large olivine phenocrysts; minor phases include FeS, and Fe-Al-Cr-spinel; orthopyroxene, Fs21.9Wo1.5, olivine, Fa26.8; low degree of shock; moderately to strongly weathered and very friable; most likely paired with NWA 1877. Specimens: main mass with anonymous finder; type specimen 23.5 g plus one polished thin section MNB.
|Origin or pseudonym:
||A. Greshake, MNB
|Type spec mass (g):
||Peter Marmet, Bern, Switzerland
||see separate entry