General Information:
Chemical Formula:
Ba(Fe++,Mn)2TiSi2O7(O,OH)2
Composition:
(Molecular Weight = 497.12 gm)
Barium 27.62 % Ba
Titanium 9.63 % Ti
Manganese 5.53 % Mn
Iron 16.85 % Fe
Silicon 11.30 % Si
Hydrogen 0.10 % H
Oxygen 28.97 % O
Empirical Formula:
BaFe2+1.5Mn2+0.5TiSi2O8.5(OH)0.5
Environment:
Alkaline igneous rocks.
Locality:
Bayan Obo REE deposit, Inner Mongolia, Juangsu Province, China.
Name Origin:
Named for the compostition (Ba, ferrous, Ti, Si).
Physical Properties:
Cleavage:
[001] Perfect, [010] Poor
Color:
red, yellowish red, or light brown.
Density:
3.96 - 4.25, Average = 4.1
Diaphaniety:
Translucent
Habits:
Granular - Generally occurs as anhedral to subhedral crystals in matrix., ,
Hardness:
5 - Apatite
Luster:
Vitreous (Glassy)
Streak:
white
More details...