Wesselsite

General Information:
 Chemical Formula:
SrCu++Si4O10
 Composition:
(Molecular Weight = 423.50 gm)
Strontium 20.69 % Sr
Silicon 26.53 % Si
Copper 15.00 % Cu
Oxygen 37.78 % O 
 Empirical Formula:
SrCuSi4O10
 IMA Status:
Approved IMA
Physical Properties:
 Cleavage:
[001] Perfect
 Color:
blue.
 Density:
3.2
 Diaphaniety:
Transparent
 Hardness:
4-5 - Fluorite-Apatite
 Luster:
Vitreous (Glassy)
 Streak:
blue white
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