Description
Polymict diogenite. Really rare. 1.10 gram full slice. Sold in collection box with label/certificate of authenticity.
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Dhofar 1768 (Dho 1768) 19.038°N, 54.906°E
Zufar, Oman
Found: 2011 Mar
Classification: HED achondrite (Diogenite, polymict)
History: Found by an anonymous prospector in March 2011.
Petrography: (A. Irving and S. Kuehner, UWS) Angular mineral grains of orthopyroxene, olivine, calcic plagioclase, exsolved pigeonite, silica polymorph, ilmenite, chromite, troilite and minor pentlandite are set in a sparse, finer grained matrix.
Geochemistry: Olivine (Fa43.3-44.6, FeO/MnO = 46-48), diogenitic orthopyroxene (Fs21.6-23.4Wo0.4-1.7, FeO/MnO = 34-36), orthopyroxene host (Fs58.7Wo5.6, FeO/MnO = 32), clinopyroxene exsolution lamellae (Fs27.2-30.5Wo42.6-39.9, FeO/MnO = 30-33), ferropigeonite (Fs45.5Wo25.4).
Classification: Diogenite (polymict).
Specimens: Type specimen plus one polished thin section at PSF; main mass with anonymous collector.
