新疆博格达地区三个岔沟铜矿化点综合物化探特征  

Comprehensive Geophysical and Geochemical Characteristics of Sangechagou Copper Mineralization Points in Bogda area,Xinjiang

作　　者：江辉 刘亮 岳继宗[3] 王春 戴元 JIANG Hui;LIU Liang;YUE Jji-zong;WANG Chun;DAI Yuan(Natural Resources Bureau of Zitong County,Zitong,Sichuan 622150;Natural Resources Bureau ofBaise City,Baise,Guangxi 533000;Northwest Sichuan Geological Team,BGEEMRSP,Mianyang Sichuan621000)

机构地区：[1]梓潼县自然资源局,四川梓潼622150 [2]百色市自然资源局,广西百色533000 [3]四川省地质矿产勘查开发局川西北地质队,四川绵阳621000

出　　处：《四川地质学报》2023年第2期238-242,263,共6页Acta Geologica Sichuan

基　　金：新疆维吾尔自治区地质勘查基金项目“新疆东天山甘河子一带1:5万区域地质矿产调查”项目(A14-1-LQ03);国家自然科学基金项目(41472310)联合资助

摘　　要：为研究博格达晚古生代铜矿成因类型,以三个岔沟铜矿化点为研究对象,总结分析其综合物化探特征。研究区1:5万化探显示有Hs(乙_(2))-25综合异常,具二级浓度,主成矿元素为Cr、Ni,伴生元素Cu、Pb、Zn、Ag、Co等元素,主成矿元素套合较好,异常规模较大。1:1万地物化综合剖面显示,Au、Co、Ni三种元素呈强富集分布,平均含量分别为水系沉积物测量平均值的1.5倍、1.82倍、2.36倍;Au、As、Cu、Pb的变异系数远大于1.5,为极不均匀分布;Cu、Pb、Zn、Ni元素曲线起伏较大,显示较好异常。区内发现1处铜矿化体,长>100m,厚0.6~0.8m,走向北西西-南东东向,Cu品位1.61%-1.95%。矿化蚀变类型为孔雀石化及褐铁矿化,赋矿地层为上石炭统祁家沟组(C_(2qj))的砂岩,含矿岩石为碎裂石英脉,受断层控制明显。为典型的火山热液(改造)型,具有进一步工作的价值。In order to study the genetic types of Bogda late Paleozoic Copper Deposit,Sangechagou copper mineralization points are taken as the research object,and their comprehensive geophysical and geochemical exploration characteristics are summarized and analyzed.The 1:50000 geochemical exploration in the study area shows a comprehensive anomaly of Hs(乙_(2))-25with two grade concentration,the main ore-forming elements are Cr and Ni,and the associated elements are Cu,Pb,Zn,Ag and Co.The main ore-forming elements are well combined and the anomaly scale is large.The 1:10000 comprehensive geophysical and geochemical section of shows that Au,Co and Ni are strongly enriched,and the average contents are 1.5 times,1.82 times and 2.36 times of the average measured values of stream sediments respectively.The coefficient of variation of Au,as,Cu and Pb is much greater than 1.5,which is very uneven distribution.The curves of Cu,Pb,Zn and Ni elements fluctuate greatly,showing good anomalies.One copper mineralized body is found in the area,which is more than 100m long and 0.6~0.8m thick,with a trend of NW-SE and the Cu grade of 1.61%~1.95%.The mineralization alteration types are malachite mineralization and limonitization.The ore-bearing stratum is QijiagouFormation(C_(2qj))of Upper Carboniferous.The ore bearing rock is cataclastic quartz vein,which is obviously controlled by faults.It is a typical volcanic hydrothermal(transformation)type and has good value for in the further work.

关 键 词：博格达 三个岔沟 铜矿 综合物化探 

分 类 号：P618.41[天文地球—矿床学] P596[天文地球—地质学]