General Information:
Chemical Formula:(Na,Ca)3(Y,Ce)12Si6B2O27F14
Composition:(Molecular Weight = 2,190.38 gm)Sodium 2.36 %
NaCalcium 1.37 %
CaCerium 19.19 %
CeYttrium 36.53 %
Y Silicon 7.69 %
SiBoron 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
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