Wendwilsonite

General Information:
 Chemical Formula:
Ca2(Mg,Co)(AsO4)2·2(H2O)
 Composition:
(Molecular Weight = 426.99 gm)
Calcium 18.77 % Ca
Magnesium 4.27 % Mg
Cobalt 3.45 % Co
Arsenic 35.09 % As
Hydrogen 0.94 % H 
Oxygen 37.47 % O 
 Empirical Formula:
Ca2Mg0.75Co0.25(AsO4)2·2(H2O)
 IMA Status:
Approved IMA
Physical Properties:
 Cleavage:
[010] Perfect
 Color:
light pink, dark pink, or red.
 Density:
3.52
 Diaphaniety:
Transparent
 Hardness:
3-4 - Calcite-Fluorite
 Luster:
Vitreous (Glassy)
 Streak:
light pink
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