General Information:
Chemical Formula:
Hydrous ferric arsenate sulfate (Fe, AsO4, SO4, H2O)
Physical Properties:
Cleavage:
None
Color:
gray, gray white, yellow, yellow brown, or white.
Density:
2.5
Diaphaniety:
Transparent to Opaque
Habits:
Reniform - "Kidney like" in shape (e.g.. hematite)., Massive - Uniformly indistinguishable crystals forming large masses.,
Hardness:
2-3 - Gypsum-Calcite
Luminescence:
Non-fluorescent.
Luster:
Vitreous - Greasy
Streak:
yellow white
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