Uchucchacuaite

General Information: Chemical Formula:AgPb3MnSb5S12 Composition:(Molecular Weight = 1,777.95 gm)Manganese 3.09 % MnSilver 6.07 % AgAntimony 34.24 % SbLead 34.96 % PbSulfur 21.64 % S  Empirical Formula: AgPb3Mn3+Sb5S12 IMA Status:Approved IMA 1981 Locality:Uchuc-Chacua deposit, Cajatambo Province, Peru. Name Origin:Named for the locality.Physical Properties: Color:lead gray. Density:5.16 Diaphaniety:Opaque Habits:Anhedral Grains - Granular minerals without the expression of crystal shapes, , Hardness:3.5 - Copper Penny Luster:MetallicMore details...