General Information:
Chemical Formula:
Tl(Sb,As)5S8
IMA Status:
Approved IMA 1975
Physical Properties:
Cleavage:
None
Color:
black.
Density:
5.04
Diaphaniety:
Opaque
Hardness:
2.5-3 - Finger Nail-Calcite
Luster:
Sub Metallic
Streak:
gray
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