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二号窿是石门雄黄矿区曾开采过的老窿。矿体主要在１６５ｍ、１４０ｍ、１２５ｍ三个标高段富集，从上至下呈现浸染状矿石—角砾状矿石的变化规律，矿石主要化学成分为Ａｓ、Ｓ、ＳｉＯ２、ＣａＯ、Ａｌ２Ｏ３、Ｆｅ２Ｏ３等；矿体元素的垂直分带明显，Ｂａ、Ｈｇ在矿体上部富集，而Ｓｂ在矿体下部含量高。窿内岩溶角砾岩、晶洞与成矿关系密切。地层、古岩溶、构造对成矿具有控制作用。地质、地球化学、地球物理特征表明二号窿深部南西方向可能存在较大的富矿体。
The second hole is Shimen Xiong Huang mining area has been the old hole. The ore body is mainly enriched in three elevation sections of 165m, 140m and 125m, showing the variation regularity of disseminated ore-brecciated ore from top to bottom. The main chemical composition of ore is As, S, SiO2, CaO, Al2O3, Fe2O3, etc. The vertical zoning of ore body elements is obvious. Ba and Hg are enriched in the upper part of the ore body while Sb is high in the lower part of the ore body. Karst breccia, crystal cave and mineralization are closely related. Stratum, ancient karst, tectonics on the control of mineralization. Geological, geochemical and geophysical characteristics indicate that there may be a large rich ore body in the deep south-west direction of No.2 borehole.