General Information:
Chemical Formula:
(Na,Ca)3(Y,Ce)12Si6B2O27F14
Composition:
(Molecular Weight = 2,190.38 gm)
Sodium 2.36 % Na
Calcium 1.37 % Ca
Cerium 19.19 % Ce
Yttrium 36.53 % Y
Silicon 7.69 % Si
Boron 0.99 % B
Oxygen 19.72 % O
Fluorine 12.14 % F
Empirical Formula:
Na2.25Ca0.75Y9Ce3Si6B2O27F14
IMA Status:
Approved IMA 1987
Physical Properties:
Cleavage:
None
Color:
light brown or light pink.
Density:
4.35
Hardness:
4 - Fluorite
Streak:
white
More details...