Magnetoplumbite

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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