Gananite

General Information:
 Chemical Formula:
BiF3
 Composition:
(Molecular Weight = 265.98 gm)
Bismuth 78.57 % Bi
Fluorine 21.43 % F 
 Empirical Formula:
BiF3
 IMA Status:
Approved IMA
Physical Properties:
 Cleavage:
None
 Color:
brown, black, or greenish black.
 Diaphaniety:
Subtranslucent to Opaque
 Hardness:
3.5 - Copper Penny
 Luster:
Resinous - Metallic
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