Darapiosite

General Information:
 Chemical Formula:
KNa2Li(Mn,Zn)2ZrSi12O30
 Composition:
(Molecular Weight = 1,024.13 gm)
Potassium 3.82 % K 
Sodium 4.49 % Na
Lithium 0.68 % Li
Manganese 8.05 % Mn
Zinc 3.19 % Zn
Silicon 32.91 % Si
Oxygen 46.87 % O 
 Empirical Formula:
KNa2LiMn2+1.5Zn0.5Si12O30
 IMA Status:
Approved IMA 1975
Physical Properties:
 Color:
blue, brown, brownish white, colorless, or white.
 Density:
2.92
 Diaphaniety:
Transparent to Translucent
 Hardness:
5 - Apatite
 Luster:
Vitreous (Glassy)
 Streak:
white
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