General Information:
Chemical Formula:
(Ca,Na)3(Zr,Ti)Si2O8F
Composition:
(Molecular Weight = 390.97 gm)
Sodium 4.41 % Na
Calcium 23.06 % Ca
Zirconium 17.50 % Zr
Titanium 3.06 % Ti
Silicon 14.37 % Si
Oxygen 32.74 % O
Fluorine 4.86 % F
Empirical Formula:
Ca2.25Na0.75Zr0.75Ti0.25Si2O8F
Physical Properties:
Cleavage:
[???] Perfect, [???] Distinct
Color:
gray, orange, or brownish.
Density:
3.3
Diaphaniety:
Transparent to Translucent
Habits:
Acicular - Occurs as needle-like crystals., ,
Hardness:
5-6 - Between Apatite and Orthoclase
Luminescence:
Non-fluorescent.
Luster:
Vitreous - Silky
Streak:
white
More details...