Xanthoxenite

General Information:
 Chemical Formula:
Ca4Fe+++2(PO4)4(OH)2·3(H2O)
 Composition:
(Molecular Weight = 739.95 gm)
Calcium 21.67 % Ca
Iron 15.09 % Fe
Phosphorus 16.74 % P 
Hydrogen 1.09 % H 
Oxygen 45.41 % O 
 Empirical Formula:
Ca4Fe3+2(PO4)4(OH)2·3(H2O)
 IMA Status:
Approved IMA 1977
Physical Properties:
 Cleavage:
[???] Perfect
 Color:
brownish yellow or light yellow.
 Density:
2.8 - 2.97, Average = 2.88
 Diaphaniety:
Translucent
 Hardness:
2.5 - Finger Nail
 Luster:
Earthy (Dull)
 Streak:
white
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