General Information:
Chemical Formula:
(Ag,Cu)10(Zn,Fe)2(As,Sb)4S13
Composition:
(Molecular Weight = 1,857.26 gm)
Zinc 5.28 % Zn
Iron 1.50 % Fe
Copper 8.55 % Cu
Silver 43.56 % Ag
Antimony 6.56 % Sb
Arsenic 12.10 % As
Sulfur 22.44 % S
Empirical Formula:
Ag7.5Cu2.5Zn1.5Fe2+0.5As3SbS13
IMA Status:
Approved IMA 1984
Physical Properties:
Cleavage:
None
Color:
gray or black.
Diaphaniety:
Opaque
Hardness:
3.5 - Copper Penny
Luster:
Resinous
Streak:
red brown
More details...