Amicite

General Information:
 Chemical Formula:
K2Na2Al4Si4O16·5(H2O)
 Composition:
(Molecular Weight = 690.51 gm)
Potassium 11.32 % K 
Sodium 6.66 % Na
Aluminum 15.63 % Al
Silicon 16.27 % Si
Hydrogen 1.46 % H 
Oxygen 48.66 % O 
 Empirical Formula:
K2Na2Al4Si4O16·5(H2O)
 IMA Status:
Approved IMA 1979
Physical Properties:
 Cleavage:
None
 Color:
colorless.
 Density:
2.06
 Diaphaniety:
Transparent
 Hardness:
5-5.5 - Apatite-Knife Blade
 Luster:
Vitreous (Glassy)
 Streak:
white
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