Emeleusite

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
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