Vauxite

Vauxite is a mineral with the chemical formula Fe2+Al2(PO4)2(OH)2·6(H2O).
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General Information:
 Chemical Formula:
Fe++Al2(PO4)2(OH)2·6(H2O)
 Composition:
(Molecular Weight = 441.86 gm)
Aluminum 12.21 % Al
Iron 12.64 % Fe
Phosphorus 14.02 % P 
Hydrogen 3.19 % H 
Oxygen 57.93 % O 
 Empirical Formula:
Fe2+Al2(PO4)2(OH)2·6(H2O)
Physical Properties:
 Cleavage:
None
 Color:
sky blue or dark blue.
 Density:
2.4
 Diaphaniety:
Transparent to Translucent
 Hardness:
3.5 - Copper Penny
 Luminescence:
Fluorescent.
 Luster:
Vitreous (Glassy)
 Streak:
white
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