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 gray
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