General Information:
Chemical Formula:
(Ag,Cu)16(Sb,As)2S11
Composition:
(Molecular Weight = 2,121.41 gm)
Copper 11.98 % Cu
Silver 61.02 % Ag
Antimony 8.61 % Sb
Arsenic 1.77 % As
Sulfur 16.63 % S
Empirical Formula:
Ag12Cu4Sb1.5As0.5S11
IMA Status:
Approved IMA 1963
Physical Properties:
Cleavage:
None
Color:
black.
Density:
6.33 - 6.35, Average = 6.34
Diaphaniety:
Opaque
Hardness:
3 - Calcite
Luster:
Sub Metallic
Streak:
black
More details...