Dhofar 700 Diogenite Meteorite |
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OFFICIAL CLASSIFICATION:
Twelve dark-grey stones totalling 2770 g were found in the Dhofar region of Oman. Classification and mineralogy (S. Demidova, Vernad; G. Kurat, NHMV): fusion crust is absent. The meteorite has an equigranular texture, and consists dominantly of orthopyroxene (Wo2.57En6271; Fe/Mn 25 at.). Accessory minerals are clinopyroxene Wo825En5566, olivine Fo6368, plagioclase An8995, silica, chromite, troilite and FeNi metal (0.23.8 wt% Ni, 0.30.8 wt% Co); terrestrial weathering is not significant; rare Fe hydroxide is present. The mafic silicates in Dho 700 have the low mg# that is a characteristic feature of diogenites. Specimens: 350 g plus thin section, Vernad; main mass with anonymous finder.
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