General Information:
Chemical Formula:As2O3
Composition:(Molecular Weight = 197.84 gm)Arsenic 75.74 %
AsOxygen 24.26 %
O Empirical Formula: As2O3
Environment:Secondary mineral from As bearing rocks.
Locality:Amargosa mine, San Bernadino Co., California, USAl
Physical Properties: Cleavage:[111] Perfect, [111] Perfect, [111] Perfect
Color:blue, white, light yellow, or red.
Density:3.7
Diaphaniety:Transparent to translucent
Habits:Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite)., Encrustations - Forms crust-like aggregates on matrix.,
Hardness:1.5 - Between Talc and Gypsum
Luminescence:Non-fluorescent.
Luster:Vitreous - Dull
Streak:white
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