Hedleyite

General Information:
 Chemical Formula:
Bi7Te3 (?)
 Composition:
(Molecular Weight = 1,845.66 gm)
Bismuth 79.26 % Bi
Tellurium 20.74 % Te
 Empirical Formula:
Bi7Te3
Physical Properties:
 Cleavage:
[0001] Perfect
 Color:
iron black, black, or tin white.
 Density:
8.91
 Diaphaniety:
Opaque
 Hardness:
2 - Gypsum
 Luster:
Metallic
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