General Information:
Chemical Formula:
As2O3
Composition:
(Molecular Weight = 197.84 gm)
Arsenic 75.74 % As
Oxygen 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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