General Information:
Chemical Formula:
Pb(Sb,As)2S4
IMA Status:
Approved IMA 1967
Physical Properties:
Cleavage:
[???] Perfect
Color:
grayish black.
Density:
5.31
Diaphaniety:
Opaque
Hardness:
4 - Fluorite
Luster:
Metallic
Streak:
brownish
More details...