General Information:
Chemical Formula:
NaMg2Al3Si2O10(OH)2
Composition:
(Molecular Weight = 402.72 gm)
Sodium 5.71 % Na
Magnesium 12.07 % Mg
Aluminum 20.10 % Al
Silicon 13.95 % Si
Hydrogen 0.50 % H
Oxygen 47.67 % O
Empirical Formula:
NaMg2Al3Si2O10(OH)2
IMA Status:
Approved IMA 1979
Physical Properties:
Cleavage:
[001] Perfect
Color:
greenish white or light green.
Density:
2.96
Diaphaniety:
Transparent to Translucent
Hardness:
2.5 - Finger Nail
Luster:
Vitreous - Pearly
Streak:
white
More details...