【摘要】 纱岭金矿床位于焦家断裂中南段,属于典型的焦家式金矿床,探获金资源量约389.2t,目前是国内平均勘查深度最大的金矿床。为进一步探讨纱岭金矿床深部成矿潜力,该文在野外地质工作的基础上,选取钻孔岩心样品,采用构造叠加晕研究方法,重点研究Ⅰ-2号主矿体地球化学特征、原生晕分带特征,建立构造叠加晕模型并进行深部找矿预测。研究结果表明:矿床的前缘晕指示元素为As-Sb-Hg,近矿晕指示元素为Au-Ag-Cu-Pb-Zn,尾晕指示元素为Bi-Mo-W-Sn;Ⅰ-2号主矿体构造叠加晕出现"反分带"现象,表明纱岭金矿床具有多期成矿成晕特征;在矿体尾部存在前缘晕与尾晕共存叠加现象,指示深部有良好的找矿前景,预测矿体侧伏方向深部(-1600m之下)有盲矿存在,预测靶位标高为-1600m～-2000m。更多还原

【Abstract】 Shaling gold deposit belongs is located in the middle and south section of Jiaojia fault. It is a typical Jiaojia type gold deposit. The discovered gold resource is 389.2t. It is a gold deposit with largest average exploration depth in China now. In order to further explore the deep metallogenic potential of Saling gold deposit, on the basis of geological work outside the field, selecting the core samples of drilling rock, by using the method of structural superimposed halo, geochemical characteristics and primary halo zoning characteristics of the main orebody Ⅰ-2 have been studied. A structural superimposed halo model has been established and deep prospecting has been predicted. It is showed that As-Sb-Hg are good indicator elements for the front halo, Au-Ag-Cu-Pb-Zn are good indicator elements for the near halo, and Bi-Mo-W-Sn are good indicator elements for the tail halo. The "anti-zoning" phenomenon, occurring in the structural superimposed halo of the main ore body Ⅰ-2 indicates that the Yaoling gold deposit has multi-stage halo-forming characteristics. In the tail of the ore body, there exists the phenomenon of coexistence and superposition of the leading edge halo and the tail halo. It is indicated that there is a good prospect in the deep part. The blind ore exists in the deep part(below -1600m) of the side direction of the ore body, and the predicted target elevation is -1600 m～-2000 m.更多还原