Willhendersonite

General Information:
 Chemical Formula:
KCaAl3Si3O12·5(H2O)
 Composition:
(Molecular Weight = 526.45 gm)
Potassium 7.43 % K 
Calcium 7.61 % Ca
Aluminum 15.38 % Al
Silicon 16.00 % Si
Hydrogen 1.91 % H 
Oxygen 51.67 % O 
 Empirical Formula:
KCaAl3Si3O12·5(H2O)
 IMA Status:
Approved IMA
Physical Properties:
 Cleavage:
[100] Perfect, [010] Perfect, [001] Perfect
 Color:
colorless.
 Density:
2.18
 Diaphaniety:
Transparent
 Hardness:
3 - Calcite
 Luster:
Vitreous (Glassy)
 Streak:
white
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