General Information:
Chemical Formula:
Na4Li2Fe+++2Si12O30
Composition:
(Molecular Weight = 1,034.54 gm)
Sodium 8.89 % Na
Lithium 1.34 % Li
Iron 10.80 % Fe
Silicon 32.58 % Si
Oxygen 46.40 % O
Empirical Formula:
Na4Li2Fe3+2Si12O30
IMA Status:
Approved IMA 1978
Physical Properties:
Cleavage:
None
Color:
colorless or pink white.
Density:
2.76
Diaphaniety:
Transparent
Hardness:
5-6 - Between Apatite and Orthoclase
Luster:
Vitreous (Glassy)
Streak:
white
More details...