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金堆城钼矿为热液细脉浸染矿床，除地表复盖薄层黄土和砾石外，全部地层为变质程度不同的安山岩，其中穿插很多的石英脉、长石脉、花岗岩脉和小型的花岗岩侵入体。地层受多次地质变动，风化甚烈。根据岩石性质可分松散松软，硬脆碎或软硬不均，软硬互层和比较完整的三种，变化没有规律。在钻进中易成粉末、碎渣和大小不同的碎块，大块逐渐磨损变小，小的即随冲洗液冲出孔外。除复盖层外，
The Jinduicheng molybdenum deposit is hydrothermal vein vein dip deposit. Except that the surface is covered with thin layers of loess and gravel, all the formations are andesite with different degrees of metamorphism, in which many quartz veins, fossil veins, granite veins and small granites are interspersed Invade the body. Stratum by a number of geological changes, very weathered. According to the rock properties can be divided loose loose, hard brittle or hard and soft uneven, hard and soft inter-layer and more complete three, there is no change in the law. Easily into the powder into the drilling, debris and different sizes of debris, the smaller the gradual wear and tear, the small flush out of the hole with the fluid. In addition to the cover,