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
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