Bararite

General Information:
 Chemical Formula:
(NH4)2SiF6
 Composition:
(Molecular Weight = 178.15 gm)
Silicon 15.76 % Si
Hydrogen 4.53 % H 
Nitrogen 15.72 % N 
Fluorine 63.98 % F 
 Empirical Formula:
(NH4)2SiF6
Physical Properties:
 Cleavage:
[0001] Perfect
 Color:
white.
 Density:
2.152
 Hardness:
2.5 - Finger Nail
 Luster:
Vitreous (Glassy)
 Streak:
white
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