Elyite

General Information:
 Chemical Formula:
Pb4Cu(SO4)(OH)8
 Composition:
(Molecular Weight = 1,124.47 gm)
Copper 5.65 % Cu
Hydrogen 0.72 % H 
Lead 73.71 % Pb
Sulfur 2.85 % S 
Oxygen 17.07 % O 
 Empirical Formula:
Pb4Cu(SO4)(OH)8
 IMA Status:
Approved IMA 1972
Physical Properties:
 Cleavage:
[001] Good
 Color:
violet.
 Density:
6
 Diaphaniety:
Transparent
 Hardness:
2 - Gypsum
 Luster:
Silky
 Streak:
white
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