General Information:
Chemical Formula:
Mn++Fe+++2(PO4)2(OH)2·8(H2O)
Composition:
(Molecular Weight = 534.71 gm)
Manganese 10.27 % Mn
Iron 20.89 % Fe
Phosphorus 11.59 % P
Hydrogen 3.39 % H
Oxygen 53.86 % O
Empirical Formula:
Mn2+Fe3+2(PO4)2(OH)2·8(H2O)
Environment:
Granitic pegmatites.
Locality:
Stuart mine, Queen Mountains, Pala, San Diego Co., California.
Name Origin:
Named after it's locality.
Physical Properties:
Cleavage:
[???] Good
Color:
brownish yellow, yellow, or orange.
Density:
2.94
Diaphaniety:
Transparent to translucent
Habits:
Fibrous - Crystals made up of fibers., Cryptocrystalline - Occurs as crystals too small to distinguish with the naked eye.,
Hardness:
3 - Calcite
Luminescence:
Non-fluorescent.
Streak:
white
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