四川省红泥坡铜矿原生晕特征及找矿方向  

Primary halo characteristics and prospecting direction of Hongnipo copper deposit,Sichuan Province

作　　者：林成贵 程志中[1,2] 陈辉 吕志成[1,2] 庞振山 陈鑫[3] 沈和明 LIN Chenggui;CHENG Zhizhong;CHEN Hui;LüZhicheng;PANG Zhenshan;CHEN Xin;SHEN Heming(Development and Research Center,China Geological Survey,Beijing 100037,China;Technical Guidance Center for Mineral Resources Exploration,Ministry of Natural Resources,Beijing 100037,China;The Faculty of Earth Resources,China University of Geosciences,Wuhan 430074,Hubei,China;403 Geological Team,Sichuan Bureau of Geology and Mineral Resources,Leshan 614200,Sichuan,China)

机构地区：[1]中国地质调查局发展研究中心,北京100037 [2]自然资源部矿产勘查技术指导中心,北京100037 [3]中国地质大学(武汉)资源学院,湖北武汉430074 [4]四川省地质矿产开发局403地质队,四川乐山614200

出　　处：《中国地质》2023年第3期837-852,共16页Geology in China

基　　金：国家重点研发计划(2017YFC0601506);中国地质调查局项目(DD20160052)联合资助。

摘　　要：【研究目的】四川省红泥坡铜矿是近年来在扬子准地台西缘康滇地轴中段发现的一处大型铜矿,由于矿体埋藏较深,地表被第四系覆盖,其深部和外围找矿难以突破。【研究方法】本文通过对矿区P-3勘查线上的5个钻孔进行原生晕样品采集,并对349个样品中的18个元素进行了分析测试和原生晕特征研究。【研究结果】主成矿元素Cu主要分布在天生坝组下段和落凼组上段,多元统计分析显示Cu与Ag、Co、Mo、As、Sb等元素的相关性较好,利用格里戈良分带指数法获得矿体原生晕轴向分带序列为(由上到下):F、Nb、La→Au、Ag、Bi、Mo→Cu、Zn、Pb、As→Sn→Co、Sb。【结论】通过构建地球化学参数找矿指标,建立了红泥坡铜矿的找矿预测模型,初步认为红泥坡铜矿的1号矿体向西部还有一定的延伸。[Objective]The Hongnipo copper deposit in Sichuan Province is a large new-discovered copper deposit in recent years in the middle section of the Kangdian axis on the western edge of the Yangtze platform.Due to the deep burial of the ore body,the surface is covered by the Quaternary,and it is difficult to break through in deep and peripheral ore exploration.[Methods]This article collected primary halo samples from 5 boreholes on the P-3 exploration line in the mining area,and analyzed and tested 18 elements out of 349 samples,as well as studied the characteristics of primary halos.[Results]The main ore-forming element Cu is mainly distributed in the lower section of Tianshengba Formation and the upper section of Luodang Formation.Multivariate statistical analysis shows that Cu has a good correlation with Ag,Co,Mo,As,Sb and other elements.The axial zoning sequence of the primary halo of the ore body is obtained by using the Grigoryan zoning index method:F,Nb,La→Au,Ag,Bi,Mo→Cu,Zn,Pb,As→Sn→Co,Sb.[Conclusions]Through the construction of geochemical exploration indexes,the prospecting prediction model of Hongnipo copper deposit is established,and it is preliminarily believed that the No.1 ore body of Hongnipo copper mine still extends to the west.

关 键 词：找矿方向 深部找矿预测 原生晕 红泥坡铜矿 矿产勘查工程 四川省 

分 类 号：P618.41[天文地球—矿床学]