Abstract:In recent years, the authors have found sixteen sorts of arsenate minerals in South China, which include dehaoite (?), copper silicarsenate (?), clinoclasite, olivenite, cornwallite, cornuhite, conichalcite, adamite, duftite, hayldonite, mimetesite, carminite, dussertite, scorodite, Ba-bearing pharmacosiderite and heudanite. The physical properties, optical constants, chemical composition, X-ray data, infrared absorption spectra and differential thermal analyses of the minerals are given in this paper, which serve as a sheet of fairly perfect data for arsenate minerals in China. Finally, the paper makes a preliminary discussion on the formation conditions of arsenate minerals.