General Information:
Chemical Formula:
(Mn++,Fe++)3(PO4)2·7(H2O)
Composition:
(Molecular Weight = 481.55 gm)
Manganese 25.67 % Mn
Iron 8.70 % Fe
Phosphorus 12.86 % P
Hydrogen 2.93 % H
Oxygen 49.84 % O
Empirical Formula:
Mn2+2.25Fe2+0.75(PO4)2·7(H2O)
IMA Status:
Approved IMA 1967
Physical Properties:
Cleavage:
[001] Perfect
Color:
brown or pink.
Density:
2.535
Diaphaniety:
Transparent to Translucent
Hardness:
2 - Gypsum
Luster:
Vitreous - Pearly
Streak:
white
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