ATACAMITE, a mineral found originally in the desert of Atacama, and named by D. de Gallizen in 180i. It is a cupric oxychlor`ide, having the formula and crystalliz ing in the orthorhombic system. Its hardness is about 3 and its specific gravity 3.7, while its colour presents various shades of green. Some of the finest crystals have been yielded by the copper-mines of South Australia, especially at Wallaroo. It occurs also, with malachite, at Bembe, near Ambriz, in West Africa. From one of its localities in Chile, Los Remolinos, it was termed Remolinite by Brooke and Miller. Small quantities of atacamite and of the very similar mineral footeite have been found in Arizona.