Xingzhongite

General Information:
 Chemical Formula:
(Pb,Cu,Fe)(Ir,Pt,Rh)2S4
 Composition:
(Molecular Weight = 645.53 gm)
Iron 0.87 % Fe
Copper 2.95 % Cu
Iridium 35.73 % Ir
Rhodium 3.19 % Rh
Platinum 18.13 % Pt
Lead 19.26 % Pb
Sulfur 19.87 % S 
 Empirical Formula:
Pb0.6Cu0.3Fe2+0.1Ir1.2Pt0.6Rh0.2S4
 IMA Status:
Approved IMA 1974
Physical Properties:
 Color:
steel gray.
 Density:
6.64
 Diaphaniety:
Opaque
 Hardness:
6 - Orthoclase
 Luster:
Metallic
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