General Information:
Chemical Formula:(Ag,Cu)16(As,Sb)2S11
Composition:(Molecular Weight = 2,074.59 gm)Copper 12.25 %
CuSilver 62.39 %
AgAntimony 2.93 %
SbArsenic 5.42 %
AsSulfur 17.00 %
S Empirical Formula: Ag12Cu4As1.5Sb0.5S11
IMA Status:Approved IMA 1963
Physical Properties: Cleavage:[???] Indistinct, [001] Distinct
Color:black.
Density:6.18 - 6.23, Average = 6.2
Diaphaniety:Opaque
Hardness:3 - Calcite
Luster:Metallic
Streak:black
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