构造叠加晕法在深部找矿中的应用——以河南小秦岭杨砦峪金矿床S60号矿脉为例

河南省杨砦峪金矿是小秦岭地区大型的石英脉矿床之一,位于华北克拉通南缘,矿体主要赋存于太古宙太华群深变质片麻岩系之中。矿体形态、产状、规模均受构造控制,S60矿脉为其主要开采矿脉。该矿床已探明黄金储量50 t以上,平均品位4 g/t。经多年开采,杨砦峪金矿床金金属储量不足,亟须在深部取得新的找矿突破。该文在总结了杨砦峪金矿床成矿规律的基础上,根据样品测试结果,结合构造叠加晕找矿理论,在杨砦峪矿床S60矿脉深部圈出了3个成矿预测靶区,为该区带进一步找矿提供了依据和建议。

Application of new structural superimposed halo method in deep blind ore prospecting:Taking S60 vein of Yangzhaiyu gold deposit in Xiaoqinling, Henan Province as an example

The Yangzhaiyu gold deposit is one of numerous lode gold deposits in Xiaoqinling region,located in the southern margin of North China Craton and mainly occurs in the deep metamorphic gneiss series of Archean Group. The morphology,attitude and scale of the orebody are controlled by tectonic,S60 vein is its significant component. The deposit has a proven gold reserve of over 50 t with an average grade of 4 g/t. It is urgent for us to undertake deep prospecting breakthrough as the clear shortage gold reserves of Yangzhaiyu gold deposit with the continuous exploitation. We have delineated three prediction target areas based on Yangzhaiyu gold deposit mineralization、samples experimental results and superimposed halo model of deep blind ore in Xiaoqinling gold metallogenic belt. It will provides the basis and suggestion for further prospecting in this area.