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凤太矿集区是秦岭重要的铅锌金多金属成矿区之一,双王金矿是该成矿区中典型的角砾岩型金矿床。本文采用格里戈良提出的原生晕分带指数法,详细研究了双王金矿床KT9矿体和KT8矿体中ZK18-5、ZK30-1和ZK40-53个坑内钻孔的原生晕轴(垂)向分带特征,通过各钻孔中原生晕分带指数垂向变化规律、微量元素衬值及地球化学参数分析进行深部矿化预测。结果显示,双王金矿床原生晕轴(垂)向分带序列呈明显的反带现象,ZK18-5中在标高950 m附近矿化程度最好,矿体向深部逐渐尖灭;ZK30-1在标高980 m附近矿化程度最好,其深部预测有串珠状矿体存在,深部矿化前景较好;ZK40-5在标高850 m附近矿化程度最好,预测深部矿体仍有较大规模的延伸,深部矿化前景较好。
Fengtai ore district is one of the most important Pb-Zn-Au polymetallic metallogenic areas in Qinling. Shuangwang gold deposit is a typical breccia-type gold deposit in the metallogenic area. In this paper, the primary halo segmentation index method proposed by Grigoryan was used to study the primary halo axis of ZK18-5, ZK30-1 and ZK40-53 boreholes in KT9 orebody and KT8 orebody in Shuangwang gold deposit Vertical) to the zoning characteristics, through the borehole in the primary halo vertical index of change, microelement lining and geochemical parameters of the deep mineralization prediction. The results show that the primary halo axis (vertical) zonal banding sequence of Shuangwang gold deposit shows obvious reverse banding phenomenon. The mineralization degree of ZK18-5 is the best at the elevation of 950 m and the ore body is gradually extinct to the deep; ZK30-1 The mineralization degree is the best at the height of 980 m, the beaded ore body is predicted in depth, and the prospect of deep mineralization is good. ZK40-5 has the best mineralization at the height of 850 m and the deep ore body is still predicted to be larger The scale of the extension of deep mineralization is better.