General Information:
Chemical Formula:
Ca3Si2O7·3(H2O)
Composition:
(Molecular Weight = 342.45 gm)
Calcium 35.11 % Ca
Silicon 16.40 % Si
Hydrogen 1.77 % H
Oxygen 46.72 % O
Empirical Formula:
Ca3Si2O7·3(H2O)
Environment:
Alkaline nepheline syenites.
Locality:
Mt. Yukspor, Khibiny massif, Kola Peninsula, Russia.
Name Origin:
Named for Willian Frederick Foshag (1984-1956), American mineralogist, and for the mineral centrallasite (now named grrolite).
Physical Properties:
Cleavage:
[100] Perfect
Color:
snow white.
Density:
2.5
Hardness:
2.5-3 - Finger Nail-Calcite
Streak:
white
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