Minerals
Rollandite
rollandite
Cu3(AsO4)2 * 4H2O
Rollandite: Mineral information, data and localities. — via www.mindat.org · Source
Overview
Copper arsenate is an inorganic compound with the chemical formula Cu3(AsO4)2·nH2O (n=0,4). It is a blue or bluish-green solid, forming monoclinic crystals.