General Information:
Chemical Formula:
CaCeMg2AlSi3O11(OH,F)2
Composition:
(Molecular Weight = 551.04 gm)
Calcium 7.27 % Ca
Cerium 25.43 % Ce
Magnesium 8.82 % Mg
Aluminum 4.90 % Al
Silicon 15.29 % Si
Hydrogen 0.27 % H
Oxygen 36.29 % O
Fluorine 1.72 % F
Empirical Formula:
CaCeMg2AlSi3O11(OH)1.5F0.5
IMA Status:
Approved IMA
Physical Properties:
Cleavage:
[???] Indistinct
Color:
brown.
Diaphaniety:
Translucent
Hardness:
6.5-7 - Pyrite-Quartz
Luster:
Vitreous (Glassy)
Streak:
light brown
More details...