Bayankhanite

General Information:
 Chemical Formula:
Cu6HgS4
 Composition:
(Molecular Weight = 710.13 gm)
Copper 53.69 % Cu
Mercury 28.25 % Hg
Sulfur 18.06 % S 
 Empirical Formula:
Cu6HgS4
 IMA Status:
Not IMA Approved
Physical Properties:
 Color:
black.
 Diaphaniety:
Opaque
 Hardness:
3-3.5 - Calcite-Copper Penny
 Luster:
Metallic
More details...