Vozhminite

General Information: Chemical Formula:(Ni,Co)4(As,Sb)S2 Composition:(Molecular Weight = 392.79 gm)Cobalt 15.00 % CoNickel 44.83 % NiAntimony 12.40 % SbArsenic 11.44 % AsSulfur 16.33 % S  Empirical Formula: Ni3CoAs0.6Sb0.4S2 IMA Status:Approved IMA 1982 Locality:Vozhmin serpentinite, Karelia, Russia. Name Origin:Named for the locality.Physical Properties: Cleavage:[???] Distinct Color:brownish yellow or light pink orange. Density:6.2 Diaphaniety:Opaque Habits:Massive - Uniformly indistinguishable crystals forming large masses., , Hardness:4.5-5 Luster:Metallic Streak:blackMore details...