General Information:
Chemical Formula:
(Na,K)3Mg4(Al,Mg)6(Si,Al)24O60
Composition:
(Molecular Weight = 1,991.71 gm)
Potassium 1.47 % K
Sodium 2.60 % Na
Magnesium 7.93 % Mg
Aluminum 9.48 % Al
Silicon 30.32 % Si
Oxygen 48.20 % O
Empirical Formula:
Na2.25K0.75Mg4Al4.5Mg2.5Si21.5Al2.5O60
IMA Status:
Approved IMA 1969
Physical Properties:
Color:
colorless.
Density:
2.7
Diaphaniety:
Transparent
Hardness:
5-6 - Between Apatite and Orthoclase
Luster:
Vitreous (Glassy)
Streak:
white
More details...