Secondary oxidation product derived from realgar, arsenopyrite, or other arsenic-bearing minerals or as a sublimation product of mine fires. Dimorphous with arsenolite.
IMA Status:
Valid Species (Pre-IMA) 1868
Locality:
San Domingo mines, Algarve, Portugal. Link to MinDat.org Location Data.
Name Origin:
Named for Frederick Claudet, the French chemist who first described naturally occurring material.
Chemical Formula: