Simple oxide, claudetite group, paramorph of arsenolite
Colour: Colourless, white
Solubility: Soluble in hot alkali solutions (Dana )
Claudetite occurs as a secondary oxidation product derived from
arsenopyrite, or other arsenic-bearing minerals, or as a sublimation product of mine
fires (Webmin, HOM). Associated minerals include arsenolite,
realgar, orpiment and
At the La Salle mine, France, claudetite has been found with native sulphur and orpiment (Dana ).
The type locality is the São Domingos mine, Corte do Pinto, Mértola, Beja, Portugal.
At Imperial county, California, USA, about 50 km north of Yuma, Arizona, claudetite has been found as an alteration product of realgar (Dana ).
At Island Mountain, Coastal Range, Trinity county, California, USA, claudetite has been found as crusts in the gossan of a pyrrhotite deposit (Dana ).
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