General Information:
Chemical Formula:
Pb2Cu2Bi4S9 (?)
Composition:
(Molecular Weight = 1,666.01 gm)
Copper 7.63 % Cu
Bismuth 50.18 % Bi
Lead 24.87 % Pb
Sulfur 17.32 % S
Empirical Formula:
Pb2Cu2Bi4S9
Locality:
Gladhammer, Province of Kalmar, Sweden.
Name Origin:
Named after its locality.
Physical Properties:
Cleavage:
[010] Good
Color:
reddish steel gray.
Density:
6.73
Diaphaniety:
Opaque
Habits:
Acicular - Occurs as needle-like crystals., ,
Hardness:
3-4 - Calcite-Fluorite
Luster:
Metallic
Streak:
black
More details...