Green balls of conichalcite with erythrite, brown olivenite Minerals 11:41 PM A+ A- Print Email Erythrite : Co3(AsO4)2·8H2O, Olivenite : Cu2(AsO4)(OH), Conichalcite : CaCu(AsO4)(OH) Locality: La Cena del Depósito concession, Cerro Minado Mines, Cuesta Alta, Huércal-Overa, Almería, Andalusia, Spain Green balls of conichalcite with erythrite, brown olivenite Photo & Collection IOB Sylvano