辽宁红透山铜锌矿床含矿岩系地球化学特征及找矿指示  

Geochemical Characteristics and Prospecting Indication of Ore-bearing Rocks in the Hongtoushan Copper-zinc Deposit,Liaoning

作　　者：吴小雷 常晋阳 曾南石 徐文杰 陶明荣 赵刚 韩建 WU Xiaolei;CHANG Jinyang;ZENG Nanshi;XU Wenjie;TAO Mingrong;ZHAO Gang;HAN Jian(China Nonferrous Metal(Guilin)Geology and Mining Co.,Ltd.,Guilin,Guangxi 541004,China;China Nonferrous Metal Mining(Group)Fushun Hongtoushan Co.,Ltd.,Fushun,Liaoning 113321,China)

机构地区：[1]中国有色桂林矿产地质研究院有限公司,广西桂林541004 [2]中国有色集团抚顺红透山矿业有限公司,辽宁抚顺113321

出　　处：《现代地质》2022年第1期362-377,共16页Geoscience

基　　金：“十二五”国家科技支撑计划项目“高寒深切割山区大型矿床找矿靶区圈定与评价技术研究”(2015BAB05B05);中国有色集团科技计划项目“大型有色金属矿山深边部找矿预测及综合技术示范研究”(2018KJJH07)。

摘　　要：红透山铜锌矿床是产于太古宙绿岩带中的块状硫化物矿床。含矿岩系为角闪斜长片麻岩、角闪斜长(石英)片麻岩、黑云斜长片麻岩、黑云斜长(石英)片麻岩、黑云石英片麻岩。通过对变质岩原岩进行恢复及构造环境判别,得出变质岩原岩均为火山岩,其中角闪斜长片麻岩与角闪斜长(石英)片麻岩的原岩为基性火山岩,黑云斜长片麻岩、黑云斜长(石英)片麻岩与黑云石英片麻岩的原岩为中酸性火山岩,岩性组合为双峰式火山喷发的产物。为探讨含矿岩系地球化学参数作为找矿指标的可能性,对含矿岩系的主量元素、稀土及微量元素进行分析,发现红透山铜锌矿床角闪斜长(石英)片麻岩的Cu元素含量(290.82μg/g)、SiO_(2)含量(57.24%)、稀土元素总量(53.78μg/g)、LREE/HREE比值(4.29)及黑云斜长(石英)片麻岩和黑云石英片麻岩的Cu元素含量(88.09μg/g)、SiO_(2)含量(70.50%)可作为重要的找矿指标。The Hongtoushan copper-zinc deposit,located in the Archean greenstone belt,is a massive sulfide deposit.The ore-bearing rocks are composed of hornblende plagiogneiss,hornblende(quartz)plagiogneiss,biotite plagiogneiss,biotite(quartz)plagiogneiss,and biotite quartz gneiss.It suggests that protoliths of these metamorphic rocks are volcanic rocks based on protolith restoration and discrimination of tectonic environment.Among them,protoliths of the hornblende plagiogneiss and hornblende(quartz)plagiogneiss are basic volcanic rocks,whereas protoliths of the biotite plagiogneiss,biotite(quartz)plagiogneiss,and biotite quartz gneiss are intermediate-acid volcanic rocks,together they were the products of the bimodal volcanics.In order to best reveal the possibility of geochemical parameters of the ore-bearing rocks as prospecting indicators,based on the major elements,rare earth elements and trace elements of the ore-bearing rocks,the authors found that the Cu(290.82μg/g),SiO_(2)(57.24%),total rare earth elements(ΣREE)concentration(53.78μg/g),and LREE/HREE ratio(4.29)of the hornblende(quartz)plagiogneiss,while the Cu(88.09μg/g)and SiO_(2)(70.50%)concentrations of the biotite(quartz)plagiogneiss and biotite quartz gneiss can be used as important prospecting indicators for the Hongtoushan copper-zinc deposit.

关 键 词：红透山铜锌矿床 主量、微量、稀土元素 原岩恢复 构造环境 找矿指标 

分 类 号：P618.4[天文地球—矿床学]