General Information:
Chemical Formula:
PbMn+++O2(OH)
Composition:
(Molecular Weight = 311.14 gm)
Manganese 17.66 % Mn
Hydrogen 0.32 % H
Lead 66.59 % Pb
Oxygen 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
More details...