General Information:
Chemical Formula:Fe++2ZnMnFe+++(PO4)3(OH)2·9(H2O)
Composition:(Molecular Weight = 768.94 gm)Manganese 7.14 %
MnZinc 8.50 %
ZnIron 21.79 %
FePhosphorus 12.08 %
P Hydrogen 2.62 %
H Oxygen 47.86 %
O Empirical Formula: Fe2+2ZnMn2+Fe3+(PO4)3(OH)2·9(H2O)
IMA Status:Approved IMA 1977
Physical Properties: Cleavage:[010] Perfect, [001] Good
Color:bronze, brown, yellow brown, or light yellow brown.
Density:2.87 - 2.92, Average = 2.89
Hardness:4 - Fluorite
Streak:light brown
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