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General Information:
 Chemical Formula:
K2(UO2)2Si6O15·4(H2O)
 Composition:
(Molecular Weight = 1,098.82 gm)
Potassium 7.12 % K 
Uranium 43.32 % U 
Silicon 15.34 % Si
Hydrogen 0.73 % H 
Oxygen 33.49 % O 
 Empirical Formula:
K2(UO2)2Si6O15·4(H2O)
 IMA Status:
Approved IMA 1960
Physical Properties:
 Color:
yellow.
 Density:
4.1
 Hardness:
1-2 - Between Talc and Gypsum
 Luster:
Waxy
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