AbstractThrough the study of the oxidized zone of the Debao skarn‐type Cu‐Sn deposit in Guangxi, the authors have found 14 arsenate minerais, most of which are for the first time reported in China. They are mainly Cu arsenate minerais with subordinate Cu‐Pb arsenate minerais and minor Fe‐Pb‐Ba varieties.Based on their paragenesis these minerais may be divided into the following series: (1) the clinoclasite‐olivenite‐cornwallite‐cornubite‐debaoite‐copper silicarsenate association, (2) the scorodite‐carminite‐beudan‐tite‐bayldonite‐ duftite association, and (3) the scorodite‐Ba‐bearing pharmacosiderite‐ dussertite association.Arsenate minerais are formed generally in the oxidized zone of the sulfide‐type deposits which lie in the warm, humid and rainy torrid‐subtropical zone with pH = 6‐8 and contain large am
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