General Information:
Chemical Formula:
Na17Ca3Mg(Ti,Mn)4[Si2O7]2(PO4)6O2F6
Composition:
(Molecular Weight = 1,816.73 gm)
Sodium 21.51 % Na
Calcium 6.62 % Ca
Titanium 7.91 % Ti
Manganese 6.05 % Mn
Silicon 6.18 % Si
Phosphorus 10.23 % P
Oxygen 35.23 % O
Fluorine 6.27 % F
Empirical Formula:
Na17Ca3Mn2+Ti3Mn3+(Si2O7)2(PO4)6O2F6
IMA Status:
Approved IMA
Physical Properties:
Color:
brown.
Density:
3.07
Diaphaniety:
Transparent to Translucent
Hardness:
5 - Apatite
Luster:
Vitreous - Resinous
More details...