论文部分内容阅读
多宝山矿床位于区域铜的高背景场中。矿床外围及矿带周围存在有铜的降低场,表明降低场提供部分成矿物质铜是可能的。矿床的硫主要来源于深部。成矿热液钾硅化期为岩浆水,石英绢云母化期为岩浆水与大气降水的混合。矿床元素组合为:Cu、Mo、Au、Ag、Pb、Zn、As、Sb、Bi、W,由矿带向外出现Cu、Mo、Ag→Pb、Zn的水平分带,由上向下出现Sb→AS→Zn→Pb→Ag→Cu→Au→Mo→Bi→W的轴向分带。最后讨论了矿质沉淀机制以及硫同位素、元素组合、含矿热液、H、O同位素、成矿物化条件等成矿作用的演化和动力学机制。
The Duobaoshan deposit is located in a high background field of regional copper. There is a copper reduction field around the deposit and around the ore zone, indicating that it is possible to reduce the field to provide a partial mineralization of copper. The sulfur in the deposit mainly comes from the deep. The mineralization hydrothermal potassium-silicification period is magmatic water, and the quartz sericitization period is a mixture of magmatic water and atmospheric precipitation. The elemental assemblages of the deposits are Cu, Mo, Au, Ag, Pb, Zn, As, Sb, Bi and W, and the horizontal bands of Cu, Mo, Ag → Pb and Zn appear outward from the ore belt, Sb → AS → Zn → Pb → Ag → Cu → Au → Mo → Bi → W. Finally, the mechanism of mineral deposition and the evolution and kinetics of mineralization such as sulfur isotopes, elemental assemblages, ore-bearing hydrothermal fluids, H, O isotopes and mineralization conditions are discussed.