Orickite

General Information: Chemical Formula:CuFeS2·(H2O) Composition:(Molecular Weight = 201.54 gm)Iron 27.71 % FeCopper 31.53 % CuHydrogen 1.00 % H Sulfur 31.82 % S Oxygen 7.94 % O  Empirical Formula: CuFe2+S2H2O Environment:Mafic alkalic diatreme. IMA Status:Approved IMA 1983 Locality:Coyote Peak diatreme, 16 miles SW of Orick, Santa Cruz Co., California. Name Origin:Named for the locality.Physical Properties: Cleavage:[001] Good Color:brass yellow. Density:4.212 Diaphaniety:Opaque Hardness:3.5 - Copper Penny Luster:Metallic Streak:blackMore details...