福建省紫金山铜金矿床原生晕地球化学特征及深部找矿前景  

Geochemical characteristics of primary halos and ore-search prospecting in the depth of the Zijinshan copper-gold deposit,Fujian province

作　　者：刘光永[1] 戴茂昌[1] 祁进平[1] 张锦章[1] 

机构地区：[1]紫金矿业集团股份有限公司,福建上杭364200

出　　处：《物探与化探》2014年第3期434-440,共7页Geophysical and Geochemical Exploration

基　　金：国家科技支撑计划课题(2009BAB43B04)

摘　　要：通过系统采集紫金山铜金矿床4～11线共41个钻孔的岩矿样，绘制原生晕剖面图，建立垂向元素分带序列、矿体剥蚀程度准则，结合深部指示元素的特征，进行隐伏矿预测。该矿床金矿近矿晕为Au-Ag-Zn1，尾部晕为Bi-Ga-Mo-Sn-Ti-Co-Ni-W1-V；铜矿前缘晕为Hg-Sb-As，近矿晕为Cu-Pb1-Zn2，尾部晕为Be-W2。矿体剥蚀程度评价表明，高硫型铜矿体往深部已尖灭。深部F-Mn-Pb2-Zn3的异常形态和元素组合符合典型斑岩矿床的外带特征，斑岩体延伸至矿床周边；深部的蚀变矿物组合、金属矿物组合、流体包裹体特征等均表明深部可能存在斑岩铜（钼）矿床。Based on systematic collection of rock and ore samples from 41 drill holes along No. 4 and No.11 exploration lines in the Zi-jinshan copper-gold deposit of Fujian Province,the authors drew a contour map of primary halos,established vertical element zoning se-quence and orebody denudation guidelines and, in combination with characteristics of the indicator elements in the depth,made a pre-diction of concealed orebodies. For gold orebody, the near-halo is Au-Ag-Zn1 , and the rear halo is Bi-Ga-Mo-Sn-Ti-Co-Ni-W1-V, whereas for copper orebody, the front halo is Hg-Sb-As, the near halo is Cu-Pb1-Zn2 , and the rear halo is Be-W2. The evaluation of the denudation of the orebody shows that the high-sulfur copper orebody pinches out to the depth. The abnormal morphology and ele-mental composition of F-Mn-Pb2-Zn3 in the depth is consistent with the characteristics of a typical porphyry deposit, the porphyry body extends to the periphery of the deposit, and the deep alteration mineral assemblages, metal mineral assemblages, fluid inclusion char-acteristics show that there may exist a porphyry Cu （ Mo） deposit in the depth of the southwest part.

关 键 词：紫金山铜金矿床 原生晕结构 深部找矿前景 高硫型矿床 斑岩型矿床 

分 类 号：P632[天文地球—地质矿产勘探]