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化探找矿就是一种探究表生、深部和隐伏矿的有效工作手段,因此化探找矿也可作为地表植被茂密,土壤覆盖较厚的热带雨林地区寻找隐伏矿产很有效的手段.该文通过在老挝热带雨林矿区进行1∶5万地球化学水系沉积物测量圈定主要元素异常,从而缩小找矿靶区,再在靶区内开展1∶1万地球化学土壤测量缩小找矿范围,再结合地质成果确定靶区,最终通过地表槽探工程在矿致异常处进行揭露,发现金矿O体的典型案例.“,”Geochemical prospecting is a valid prospecting method to find blind mineral resource in tropical rain forest area where is covered by thick vegetation and sediment. Now it has been applied in many regions and obtained good effects. This article has a discussion on a typical example to use this method for finding gold ore bodies. Main elements anomalies are delineated by use of 1:5 0000 stream sediment survey, then prospecting targets are delineated. And the prospecting targets are narrowed down by the use of 1:10 000 soil investigation. At last, in combination with geological data, gold bodies are found by the trench on the surface successfully.