Quenselite

General Information: Chemical Formula:PbMn+++O2(OH) Composition:(Molecular Weight = 311.14 gm)Manganese 17.66 % MnHydrogen 0.32 % H Lead 66.59 % PbOxygen 15.43 % O  Empirical Formula: PbMn3+O2(OH) Environment:In iron ore associated with calcite and barite. Locality:Langbanshyttan, Vermland, Sweden.Physical Properties: Cleavage:[001] Perfect Color:pitch black. Density:6.842 Diaphaniety:Opaque Hardness:2.5 - Finger Nail Luster:Earthy (Dull) Streak:dark brownish grayMore details...