General Information:
Chemical Formula:
Au3Cu2PbTe2
Composition:
(Molecular Weight = 1,180.39 gm)
Copper 10.77 % Cu
Tellurium 21.62 % Te
Lead 17.55 % Pb
Gold 50.06 % Au
Empirical Formula:
Au3Cu2PbTe2
Environment:
Weathering zone of gold-telluride deposits.
IMA Status:
Approved IMA 1978
Locality:
Far Eastern region, Russia.
Name Origin:
Named for Yuri A. Bilibin (1902-1952), Russian geologist.
Physical Properties:
Cleavage:
None
Color:
bronze brown, light brown, or pink brown.
Density:
14.27
Diaphaniety:
Opaque
Habits:
Massive - Uniformly indistinguishable crystals forming large masses., ,
Hardness:
5 - Apatite
Luster:
Sub Metallic
Streak:
brown
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