Daomanite

General Information:
 Chemical Formula:
CuPtAsS2
 Composition:
(Molecular Weight = 397.68 gm)
Copper 15.98 % Cu
Arsenic 18.84 % As
Platinum 49.05 % Pt
Sulfur 16.13 % S 
 Empirical Formula:
CuPtAsS2
 IMA Status:
Approved IMA 1974
 Locality:
Dao and Ma districts, Yanshan, China.
 Name Origin:
Named for the locality.
Physical Properties:
 Cleavage:
[100] Good, [001] Distinct, [010] Fair
 Color:
gray or silver gray.
 Density:
7.03
 Diaphaniety:
Opaque
 Hardness:
3.5-4 - Copper Penny-Flourite
 Luster:
Metallic
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