Omeiite
Omeiite is an IMA-recognized mineral species in the sulfide class, with the chemical formula OsAs₂.
It crystallizes in the orthorhombic crystal system (space group Pnnm). It is a member of the Löllingite structural group.
Key properties: specific gravity 11.2; Metallic luster.
IMA symbol Ome, IMA status: approved, named in 1978.
Found in a Cu–Ni sulfide deposit in association with an ultramafic body.
It is found associated with Pyrrhotite, pentlandite, chalcopyrite, violarite, cubanite, bornite, sphalerite, galena, linnaeite, magnetite, testibiopalladite, sudburyite, michenerite.
The name refers to Omeishan, a well-known mountain in Sichuan Province, China.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
Browse more O minerals or help write this entry.