Arsenolite

As₂O₃

Arsenolite is an arsenic mineral, chemical formula As2O3. It is formed as an oxidation product of arsenic sulfides. Commonly found as small octahedra it is white, but impurities of realgar or orpiment may give it a pink or yellow hue. It can be associated with its dimorph claudetite (a monoclinic form of As2O3) as well as realgar (As4S4), orpiment (As2S3) and erythrite, Co3(AsO4)2·8H2O.

Chemical Formula:

As₂O₃

Hardness:

N/A

Crystal System:

Cubic

Color:

White, pale blue, pink to pale yellow if impure

Streak:

white /pale white

Luster:

Vitreous to silky; may be earthy or dull

Cleavage:

On {111}

Formation Environment:

Hydrothermal

Economic Use:

N/A

Associated Minerals:

N/A

Tags:

Hydrothermal

Cubic

Hand Sample

Thin Section

Crystal Structure

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