Magnesioaubertite

General Information:
 Chemical Formula:
(Mg,Cu)Al(SO4)2Cl·14(H2O)
 Composition:
(Molecular Weight = 540.89 gm)
Magnesium 3.37 % Mg
Aluminum 4.99 % Al
Copper 2.94 % Cu
Hydrogen 5.22 % H 
Sulfur 11.86 % S 
Chlorine 6.55 % Cl
Oxygen 65.08 % O 
 Empirical Formula:
Mg0.75Cu0.25Al(SO4)2Cl·14(H2O)
 IMA Status:
Approved IMA
Physical Properties:
 Color:
blue.
 Density:
1.8
 Diaphaniety:
Transparent
 Hardness:
2-3 - Gypsum-Calcite
 Luster:
Vitreous (Glassy)
More details...