General Information:
Chemical Formula:
Pb2(Mn++,Mg)0.33Fe+++10.67O18.33
Environment:
Occurs with jacobsite.
Locality:
Jakobsberg, Nordmark, Sweden.
Physical Properties:
Cleavage:
[0001] Good
Color:
black.
Density:
6
Diaphaniety:
Opaque
Habits:
Crystalline - Coarse - Occurs as well-formed coarse sized crystals., Tabular - Form dimensions are thin in one direction.,
Hardness:
5 - Apatite
Luster:
Metallic
Streak:
red
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