General Information:
Chemical Formula:
Ba(Mn,Fe++)2TiO(Si2O7)(OH,F)2
Composition:
(Molecular Weight = 514.71 gm)
Barium 26.68 % Ba
Titanium 9.30 % Ti
Manganese 16.01 % Mn
Iron 5.43 % Fe
Silicon 10.91 % Si
Hydrogen 0.29 % H
Oxygen 29.53 % O
Fluorine 1.85 % F
Empirical Formula:
BaMn2+1.5Fe2+0.5TiO(Si2O7)(OH)1.5F0.5
IMA Status:
Approved IMA
Physical Properties:
Cleavage:
[???] Perfect
Color:
golden yellow or orange brown.
Density:
4.016
Diaphaniety:
Translucent
Hardness:
4.5 - Between Fluorite and Apatite
Luster:
Vitreous (Glassy)
Streak:
brown yellow
More details...