General Information:
Chemical Formula:
Na2K(Ti,Nb)4O4(SiO4)2(O,OH)·4(H2O)
Composition:
(Molecular Weight = 658.10 gm)
Potassium 5.94 % K
Sodium 6.99 % Na
Titanium 21.83 % Ti
Niobium 14.12 % Nb
Silicon 8.54 % Si
Hydrogen 1.26 % H
Oxygen 41.33 % O
Empirical Formula:
Na2KTi3NbO4.75(SiO4)2(OH)0.25·4(H2O)
IMA Status:
Approved IMA
Physical Properties:
Cleavage:
[???] Perfect
Color:
colorless, light brown, or pink.
Density:
2.86
Diaphaniety:
Transparent to Translucent
Hardness:
4.5 - Between Fluorite and Apatite
Luster:
Vitreous (Glassy)
Streak:
white
More details...