安徽五河地区天井湖铅金矿床原生晕地球化学特征  

Primary halo geochemistry of Tianjinghu Pb-Au deposit, Wuhe area, Anhui Province

作　　者：张建明 肖涛 张家嘉 杜东旭[1] 张顺林[1] Zhang Jianming;Xiao Tao;Zhang Jiajia;Du Dongxu;Zhang Shunlin(Geological Exploration Technology Institute of Anhui Province,Hefei 230031,Anhui,China;Geophysical and Geochemical Exploration Brigade of Jiangxi,Nanchang 330009,Jiangxi,China)

机构地区：[1]安徽省勘查技术院,安徽合肥230031 [2]江西省地质矿产勘查开发局物化探大队,江西南昌330009

出　　处：《地质学刊》2021年第3期247-253,共7页Journal of Geology

基　　金：安徽省公益性地质调查项目“五河县荣渡—小溪集金及多金属矿整装勘查”(2010-2-34、2011-01-28、2013-03-09、2015-2-9)。

摘　　要：系统采集安徽五河地区天井湖铅金矿床16个钻孔的岩石、矿石样品,选择钻孔数量较多、矿体连续性较好的90勘探线为研究对象,绘制原生晕地球化学剖面图,建立了5个铅金矿体的原生晕轴向分带序列,结合相关指示元素的分布规律,对铅金矿体的深部延伸进行预测。通过研究,总结出矿床前缘晕元素为As,主成矿元素为Au、Pb,尾晕元素为Bi。根据矿体原生晕特征和相关指示元素的分布规律,推测该矿床为多期成矿的中低温热液矿床,预测Ⅰ号和4号矿体的延伸方向及ZK9004、ZK9006孔深部As异常的延伸方向有盲矿体存在。Based on the systematic collection of rock and ore samples from 16 boreholes of Tianjinghu Pb-Au deposit in Wuhe area, Anhui Province, and the selection of Exploration Line 90 with a large number of boreholes and good continuity of ore body as the research object, the geochemical profile of primary halo was drawn, and the axial zoning sequence of primary halos of 5 lead-gold orebodies was established. Combined with the distribution law of relevant indicator elements, the deep extension of lead-gold orebodies was carried out. It is concluded that the front halo element of the deposit is As, the main ore-forming elements are Au and Pb, and the tail halo element is Bi. According to the characteristics of the primary halo of the ore body and the distribution law of the related indicator elements, it is inferred that the deposit is a multi-stage mineralization medium-low temperature hydrothermal deposit. It is predicted that there are blind ore bodies in the extension direction of No.Ⅰ and No. 4 ore bodies and deep As anomalies revealed by ZK9004 and ZK9006 holes.

关 键 词：原生晕 轴向分带 指示元素 铅金矿床 安徽五河天井湖 

分 类 号：P632.2[天文地球—地质矿产勘探]