岫岩金矿新甸金矿区定位成矿预测原理及效果

Principle and Effect of Position Metallogenic Prognosis in Xindian Area of Xiuyan Gold Mine

岫岩金矿新甸矿区诸金矿脉是含受早元古宙变质变形期韧性剪切带控制的变质热液型金矿，矿化类型为含金石英脉型．依据所提出的成矿趋势场理论与方法，即由已知矿脉体开拓区段矿石品位空间变化所表征的成矿物质沉淀趋势场及其所对应的成矿流体温压场的综合，进行了矿区Ⅰ和Ⅱ号矿脉的成矿预测，实现了定位、定量的预测成果：其中Ⅰ号矿脉的最佳成矿区间为600m，预测储量为3．2t，Ⅱ号脉成矿最佳区间为1000m，见矿深度应大于Ⅰ号矿脉400m左右。经已知工程和新开拓工程验证，证明了上述预测成果的可靠性。

Being the gold bearing quartz vein type, the ore veins of Xindian gold deposit are the metamor phic hydrothermel ones controlled by the ductile shear zone of the early Proterozoic metamorphic and deformation period. On the basis of the proposed theory and method for'metallogenic trend field', the metallogenicprognosis of vein Ⅰand Ⅱis made. The result shows that the best metallogenic depth for vein Ⅰis 600m with3. 2 t of prognosticated re8erves and that for vein Ⅱis 1000 m. The exploration engineering verified the aboveresult.