This research was supported by the Project of Geological Background,Mineralization and Prospecting Potential of the Important Ore Deposits in Central and Southern Africa No.1212011220910 form Geological Survey of China.本文为中国地质调查局项目“非洲中南部重要矿床地质背景、成矿作用和找矿潜力研究”1212011220910的成果