General Information:
Chemical Formula:
Na5Ti+++Nb2Si4O12O5F·5(H2O)
Composition:
(Molecular Weight = 842.05 gm)
Sodium 13.65 % Na
Titanium 5.69 % Ti
Niobium 22.07 % Nb
Silicon 13.34 % Si
Hydrogen 1.20 % H
Oxygen 41.80 % O
Fluorine 2.26 % F
Empirical Formula:
Na5TiNb2Si4O17F·5(H2O)
Physical Properties:
Cleavage:
[001] Perfect, [110] Distinct
Color:
white, yellowish white, gray, or light brown.
Density:
2.65 - 2.89, Average = 2.77
Diaphaniety:
Translucent
Hardness:
1-1.5 - Talc or a little harder
Luster:
Pearly
Streak:
white
More details...