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On the Mechanism of Transformation fromPrimary Ores into Oxidized Ores in FinelyDisseminated Gold Deposits
Authors:LIU Xianfan  NI Shijun  JIN Jingfu  LU Qiuxiaand ZHANG Xingchun Open Lab of Ore Deposits Geochemistry
Institution:LIU Xianfan,NI Shijun,JIN Jingfu,LU Qiuxiaand ZHANG Xingchun Open Lab of Ore Deposits Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang,Guizhou Chengdu Institute of Technology,Chengdu,Sichuan
Abstract:This paper, taking the finely disseminated gold deposits in southwestern Guizhou and northwestern Guangxi as examples, discusses the difference between the occurrence of primary ores and that of oxidized ores, analyzes the occurrence mechanism in terms of crystallochemistry and geochemistry, and especially studies the chemical model for supergene leaching transformation of clay minerals in the two types of ores. This study proposes a new idea for dressing and smelting technology for primary gold ores.
Keywords:occurrence of gold ore  clay minerals  supergene leaching transformation  chemical model
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