Kettnerite

General Information:
 Chemical Formula:
CaBi(CO3)OF
 Composition:
(Molecular Weight = 344.07 gm)
Calcium 11.65 % Ca
Bismuth 60.74 % Bi
Carbon 3.49 % C 
Oxygen 18.60 % O 
Fluorine 5.52 % F 
 Empirical Formula:
CaBi(CO3)OF
Physical Properties:
 Color:
brown, brownish yellow, yellow, yellow brown, or light yellow.
 Density:
5.8
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