Wairakite

General Information:
 Chemical Formula:
CaAl2Si4O12·2(H2O)
 Composition:
(Molecular Weight = 434.41 gm)
Calcium 9.23 % Ca
Aluminum 12.42 % Al
Silicon 25.86 % Si
Hydrogen 0.93 % H 
Oxygen 51.56 % O 
 Empirical Formula:
CaAl2Si4O12·2(H2O)
 IMA Status:
Approved IMA
Physical Properties:
 Cleavage:
[100] Distinct
 Color:
colorless or white.
 Density:
2.26
 Diaphaniety:
Transparent to Translucent
 Hardness:
5.5-6 - Knife Blade-Orthoclase
 Luster:
Vitreous - Dull
 Streak:
white
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