General Information:
Chemical Formula:
Ca2Al2V+++(SiO4)3(OH)
Composition:
(Molecular Weight = 478.32 gm)
Calcium 16.76 % Ca
Aluminum 11.28 % Al
Vanadium 10.65 % V
Silicon 17.62 % Si
Hydrogen 0.21 % H
Oxygen 43.48 % O
Empirical Formula:
Ca2Al2V3+(SiO4)3(OH)
IMA Status:
Approved IMA 1969
Physical Properties:
Cleavage:
[001] Perfect, [100] Good
Color:
black.
Diaphaniety:
Translucent
Hardness:
8 - Topaz
Luster:
Vitreous (Glassy)
Streak:
brownish gray
More details...