Nefedovite

General Information:
 Chemical Formula:
Na5Ca4(PO4)4F
 Composition:
(Molecular Weight = 674.14 gm)
Sodium 17.05 % Na
Calcium 23.78 % Ca
Phosphorus 18.38 % P 
Oxygen 37.97 % O 
Fluorine 2.82 % F 
 Empirical Formula:
Na5Ca4(PO4)4F
Physical Properties:
 Cleavage:
None
 Color:
colorless or white.
 Density:
3.01
 Diaphaniety:
Transparent
 Hardness:
4.5 - Between Fluorite and Apatite
 Luster:
Vitreous (Glassy)
 Streak:
white
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