General Information:
Chemical Formula:
Pb3Bi4(S,Se)9
Environment:
Iolite bearing amphibolite.
Locality:
Galun, Koperberg, Sweden.
Physical Properties:
Cleavage:
[???] Good
Color:
light lead gray.
Density:
7.12
Diaphaniety:
Opaque
Hardness:
2-2.5 - Gypsum-Finger Nail
Luster:
Metallic
Streak:
black
More details...