General Information:
Chemical Formula:
NaBeSi3O7(OH)
Composition:
(Molecular Weight = 245.26 gm)
Sodium 9.37 % Na
Beryllium 3.67 % Be
Silicon 34.35 % Si
Hydrogen 0.41 % H
Oxygen 52.19 % O
Empirical Formula:
NaBe(Si3O7)(OH)
Locality:
Island of Aro, Langesundfiord, Norway.
Physical Properties:
Cleavage:
[001] Perfect, [010] Perfect
Color:
colorless, white, gray, yellow, or blue.
Density:
2.55
Diaphaniety:
Transparent to translucent
Hardness:
5.5 - Knife Blade
Luster:
Vitreous (Glassy)
Streak:
white
More details...