General Information:
Chemical Formula:
CaCa2(Mg4Al)Si5Al3O22F2
Composition:
(Molecular Weight = 851.81 gm)
Calcium 14.12 % Ca
Magnesium 11.41 % Mg
Aluminum 12.67 % Al
Silicon 16.49 % Si
Hydrogen 0.24 % H
Oxygen 45.08 % O
Empirical Formula:
Ca3Mg4Al4Si5O22(OH)2
IMA Status:
Approved IMA 1996
Physical Properties:
Color:
greenish gray.
Density:
3.05
Diaphaniety:
Semitranslucent
Hardness:
6 - Orthoclase
Luster:
Vitreous (Glassy)
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