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Formula: Al(AsO4).2H2O
Arsenate, variscite group,
forms a series with scorodite
Crystal System: Orthorhombic
Specific gravity: 3.03 measured
Hardness: 3½ to 4
Streak: White
Colour: White, light gray; colourless in transmitted light.
Environments:
At the type locality, Hobart Butte, Oregon, USA, mansfieldite is associated with
scorodite, realgar and
kaolinite.
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