Jaffeite

General Information:
 Chemical Formula:
Ca4(Si3O7)(OH)6
 Composition:
(Molecular Weight = 458.61 gm)
Calcium 34.96 % Ca
Silicon 18.37 % Si
Hydrogen 1.32 % H 
Oxygen 45.35 % O 
 Empirical Formula:
Ca4(Si3O7)(OH)6
 IMA Status:
Approved IMA
Physical Properties:
 Cleavage:
[???] Indistinct
 Color:
colorless.
 Density:
2.65
 Diaphaniety:
Transparent
 Luster:
Vitreous (Glassy)
 Streak:
white
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