湖南湘西金矿在长期的开采过程中产生了大量的尾矿，其中堆存时间最长的一号尾矿库中，金发生了显著的次生成矿作用。次生矿体平均金品位5．92g／t，平均厚度11．77m，可达小-中型金矿床规模。水化学分析、热力学分析和模拟实验表明，尾矿-水的相互作用导致了尾矿中金的溶解、迁移和次生成矿作用。 Hunan Xiangxi gold mine produced a large amount of tailings in the long-term mining process, of which gold had a significant secondary mineralization in tailings No. 1 with the longest deposit time. Secondary gold ore grade average 5.92g / t, the average thickness of 11.77m, up to small - medium-sized gold deposits. Hydrochemical analysis, thermodynamic analysis and simulation experiments show that the tailings-water interaction leads to the dissolution, migration and secondary mineralization of gold in the tailings.