Nekoite

General Information:
 Chemical Formula:
Ca3Si6O15·7(H2O)
 Composition:
(Molecular Weight = 654.84 gm)
Calcium 18.36 % Ca
Silicon 25.73 % Si
Hydrogen 2.15 % H 
Oxygen 53.75 % O 
 Empirical Formula:
Ca3Si6O15·7(H2O)
 Environment:
Metamorphosed limestone.
 Locality:
Crestmore quarry, 5 miles NW of Riverside, Riverside Co., California.
Physical Properties:
 Cleavage:
[100] Distinct
 Color:
pearl white.
 Density:
2.23
 Luster:
Pearly
 Streak:
white
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