General Information:
Chemical Formula:
Ca3(Ce,Y)2(Ti,Al,Fe+++)B4Si4O22
Composition:
(Molecular Weight = 924.84 gm)
Calcium 13.00 % Ca
Cerium 22.73 % Ce
Yttrium 4.81 % Y
Titanium 3.11 % Ti
Aluminum 0.88 % Al
Iron 0.60 % Fe
Silicon 12.15 % Si
Boron 4.68 % B
Oxygen 38.06 % O
Empirical Formula:
Ca3Ce1.5Y0.5Ti0.6Al0.3Fe3+0.1B4Si4O22
IMA Status:
Approved IMA 1987
Physical Properties:
Cleavage:
[010] Distinct
Color:
gray brown or reddish brown.
Density:
3.73 - 3.86, Average = 3.79
Diaphaniety:
Translucent
Hardness:
6 - Orthoclase
Luster:
Vitreous (Glassy)
Streak:
white
More details...