Dellaite

General Information:
 Chemical Formula:
Ca6Si3O11(OH)2
 Composition:
(Molecular Weight = 534.73 gm)
Calcium 44.97 % Ca
Silicon 15.76 % Si
Hydrogen 0.38 % H 
Oxygen 38.90 % O 
 Empirical Formula:
Ca6Si3O11(OH)2
 IMA Status:
Approved IMA 1965
Physical Properties:
 Color:
colorless.
 Density:
2.94
 Diaphaniety:
Transparent
 Luster:
Vitreous (Glassy)
 Streak:
white
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