Makovickyite

General Information: Chemical Formula:Ag1.5Bi5.5S9 Composition:(Molecular Weight = 1,599.79 gm)Silver 10.11 % AgBismuth 71.85 % BiSulfur 18.04 % S  Empirical Formula: Ag1.5Bi5.5S9 Environment:Found in a dolomite skarn. IMA Status:Approved IMA Locality:Baita Bihourului (formerly Rezbanya), Romaina and Felbertal, Austria. Name Origin:For Dr. Emil Makovicky, Slovak and Danish mineralogist, University of Copenhagen.Physical Properties: Cleavage:None Color:gray. Density:6.7 Diaphaniety:Opaque Habits:Compact - Occurs as a compact mass., Granular - Generally occurs as anhedral to subhedral crystals in matrix., Hardness:3.5 - Copper Penny Luster:Metallic Streak:grayMore details...