General Information:
Chemical Formula:
(Pb,Fe)3Ge1-xS4
Composition:
(Molecular Weight = 705.33 gm)
Iron 5.94 % Fe
Germanium 9.78 % Ge
Lead 66.10 % Pb
Sulfur 18.18 % S
Empirical Formula:
Pb2.25Fe2+0.75Ge0.95S4
IMA Status:
Approved IMA 1979
Physical Properties:
Cleavage:
None
Color:
brownish gray.
Density:
6.62
Diaphaniety:
Opaque
Hardness:
3.5 - Copper Penny
Luster:
Metallic
Streak:
dark gray
More details...