Arsenolite

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 claudetite (a monoclinic form of As₂O₃) as well as realgar(As₄S₄), orpiment (As₂S₃) and erythrite, Co₃(AsO₄)₂·8H₂O.[1]

References

1. ^ a b http://rruff.geo.arizona.edu/doclib/hom/arsenolite.pdf Handbook of Mineralogy
2. ^ http://webmineral.com/data/Arsenolite.shtml Webmineral
3. ^ http://www.mindat.org/min-294.html Mindat

List of minerals