General Information:
Chemical Formula:
Na(V+++,Cr+++)Si2O6
Composition:
(Molecular Weight = 226.36 gm)
Sodium 10.16 % Na
Vanadium 16.88 % V
Chromium 5.74 % Cr
Silicon 24.81 % Si
Oxygen 42.41 % O
Empirical Formula:
NaV3+0.75Cr0.25Si2O6
IMA Status:
Approved IMA
Physical Properties:
Cleavage:
[110] Distinct
Color:
yellow green or light green.
Density:
3.55
Diaphaniety:
Transparent
Hardness:
7 - Quartz
Luster:
Vitreous - Silky
Streak:
green
More details...