General Information:
Chemical Formula:
[ ]CaNaMg3Al2(Si7Al)O22(OH)2
Composition:
(Molecular Weight = 799.53 gm)
Sodium 2.88 % Na
Calcium 5.01 % Ca
Magnesium 9.12 % Mg
Aluminum 10.12 % Al
Silicon 24.59 % Si
Hydrogen 0.25 % H
Oxygen 48.03 % O
Empirical Formula:
CaNaMg3Al2(Si7AlO22)(OH)2
IMA Status:
Approved IMA 1978
Physical Properties:
Density:
2.94
Diaphaniety:
Transparent to Translucent
Hardness:
5-6 - Between Apatite and Orthoclase
Luster:
Vitreous (Glassy)
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