Ardealite

General Information:
 Chemical Formula:
Ca2(SO4)(HPO4)·4(H2O)
 Composition:
(Molecular Weight = 632.20 gm)
Calcium 12.68 % Ca
Phosphorus 19.60 % P 
Hydrogen 1.91 % H 
Sulfur 5.07 % S 
Oxygen 60.74 % O 
 Empirical Formula:
Ca2(SO4)(HPO4)4·4(H2O)
Physical Properties:
 Color:
light yellow.
 Density:
2.3
 Streak:
white
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