辽宁五龙金矿构造叠加晕研究  

Structural superimposed halo of the Wulong gold deposit in Liaoning Province

作　　者：俞炳 曾庆栋[1,2,3] 夏凡 邱海城 李建平 解丽强 陈显玉 于宝申 YU Bing;ZENG Qingdong;XIA Fan;QIU Haicheng;LI Jianping;XIE Liqiang;CHEN Xianyu;YU Baoshen(Key Laboratory of Mineral Resources,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029;Innovation Academy for Earth Science,Chinese Academy of Sciences,Beijing 100029;College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100049;State Key Laboratory for Mineral Deposits Research,School of Earth Sciences and Engineering,Nanjing University,Nanjing,Jiangsu 210023;State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang,Guizhou 550081;Liaoning Wulong Gold Mining Co.,Ltd.,Dandong,Liaoning 118012)

机构地区：[1]中国科学院地质与地球物理研究所,矿产资源研究重点实验室,北京100029 [2]中国科学院地球科学研究院,北京100029 [3]中国科学院大学,地球与行星科学学院,北京100049 [4]南京大学,地球科学与工程学院,内生金属矿床成矿机制研究国家重点实验室,江苏南京210023 [5]中国科学院地球化学研究所,环境地球化学国家重点实验室,贵州贵阳550081 [6]辽宁五龙黄金矿业有限责任公司,辽宁丹东118012

出　　处：《地质与勘探》2020年第5期898-914,共17页Geology and Exploration

基　　金：国家重点研发计划“深地资源勘查开采”重点专项(编号:2016YFC0600108-03-1);南京大学内生金属矿床成矿机制研究国家重点实验室开放研究基金(编号:2019-LAMD-K09);国家留学基金管理委员会(编号:201904910709)联合资助。

摘　　要：五龙金矿是辽东矿集区的大型石英脉型金矿床,累计黄金储量超过80 t,平均品位为5.35 g/t。随着开采量的增加,目前该矿床开采深度达近千米,保有储量不断减少,步入危机矿山行列,急需开展矿区深部找矿预测研究,以实现寻找深部盲矿的有效突破。本次研究在前人研究工作的基础上,分析五龙金矿床矿石微量元素地球化学特征,运用相关分析、聚类分析、因子分析等多元统计方法,对五龙金矿构造叠加晕进行了系统研究。结果显示,五龙金矿成矿过程具有多期次和多阶段的特征,各指示元素在矿体轴向上具有前缘晕、近矿晕、与尾晕相互叠加的现象,该现象是深部盲矿预测的重要依据,反映了深部具有盲矿存在的可能性。The Wulong gold deposit,located in the ore-concentrated district,eastern Liaoning Province,is a large quartz vein type mine hosting more than 80 tons of gold with an average grade of 5.35 g/t.At present,its orebodies have been mined down to the depth of 1 km below the ground,and the Au reserve is reducing steadily.Therefore,it is urgent to carry out exploration toward the deep subsurface in order to find more concealed gold orebodies.Based on previous geological studies,this work focused on the trace element geochemistry of orebody and wall rock in the Wulong gold deposit.The multivariate statistical methods such as correlation analysis,cluster analysis and factor analyses,were used to systematically study the structural superimposed halo of trace elements from top to bottom.The results show that the gold mineralization process of this deposit includes multiple periods and multiple stages,in which each indicator element has multiple superimpositions of front halo,near-ore halo,and tail halo in axes of orebodies.These indicate a high possibility of concealed gold orebodies in the deep subsurface.

关 键 词：构造叠加晕 矿床地球化学 盲矿预测 五龙金矿 辽宁省 

分 类 号：P618.51[天文地球—矿床学] P595[天文地球—地质学]