General Information:
Chemical Formula:
Pb(Fe+++,Mn+++)12O19
Locality:
Langbanshyttan, Vermland, Sweden.
Physical Properties:
Cleavage:
[001] Good
Color:
grayish black or black.
Density:
5.517
Diaphaniety:
Opaque
Hardness:
6 - Orthoclase
Luster:
Metallic
Streak:
dark brown
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