General Information:
Chemical Formula:(Ca,Na)2(Be,Al)Si2(O,OH)7
Composition:(Molecular Weight = 255.30 gm)Sodium 4.50 %
NaCalcium 23.55 %
CaBeryllium 2.65 %
BeAluminum 2.64 %
AlSilicon 22.00 %
SiHydrogen 0.79 %
H Oxygen 43.87 %
O Empirical Formula: Ca1.5Na0.5Be0.75Al0.25Si2O5(OH)2
IMA Status:Approved IMA 1983
Physical Properties: Cleavage:[001] Perfect, [110] Perfect
Color:colorless.
Density:2.99
Diaphaniety:Transparent
Hardness:5 - Apatite
Luster:Vitreous (Glassy)
Streak:white
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