吉林桦甸板庙子金矿床控矿构造分析  

Analysis on ore-controlling structure of Banmiaozi gold deposit in Huadian,Jilin Province

作　　者：于景山 刘勇 王世波 王聚胜[2] 李斌[2] 臧兴运[2] YU Jingshan;LIU Yong;WANG Shibo;WANG Jusheng;LI Bin;ZANG Xingyun(Huadian Gold Corporation Ltd.,Huadian 132400,Jilin,China;Institute of Geological Survey of Jilin Province,Changchun 130102,Jilin,China)

机构地区：[1]桦甸市黄金有限责任公司,吉林桦甸132400 [2]吉林省地质调查院,吉林长春130102

出　　处：《吉林地质》2024年第1期9-15,共7页Jilin Geology

摘　　要：根据已有采(探)矿工程揭露的金矿体的地质信息,对桦甸板庙子金矿床控矿构造特征进行解析,总结了断裂构造对矿体的控制作用。含金石英脉严格受北西西向压扭性断裂构造控制,矿体水平上、垂向上均具有舒缓波状的特点,延深大于延长,侧伏现象不明显。垂向上根据矿体的规模、产状、矿体类型及品位等变化情况,垂向上可分为浅部、中部、深部三个矿化带。总体上矿体具有由网脉状、细脉状向相对稳定的粗脉、大脉变化的趋势,矿体宽度、品位由变化较大趋向于变化较小,围岩蚀变矿物由中低温矿物向中温矿物转变。本矿床应处于中浅构造层次向中部构造层次过渡部位,深部应有很好的找矿前景,但应注意矿脉的反倾现象。According to the geological information of gold orebody exposed by existing mining and prospecting projects,the ore-controlling structure characteristics of Banmiaozi gold deposit in Huadian are analyzed,and the controlling effect of fault structure on gold orebody is summarized.Gold-bearing quartz veins are strictly controlled by nww-trending compression-torsion faults,the ore body is characterized by gentle undulation both horizontally and vertically,the extension is bigger than the extension,and the lateral volt is not obvious.The mineralization zones can be vertically classified into three categories:shallow,middle,and deep,based on the variations in orebody scale,occurrence,type,and grade.The orebody has a trend of changing from net vein and fine vein to relatively stable thick vein and large vein in vertical direction,the width and grade of ore body tend to change from larger to smaller,and the alteration minerals of wall rock change from medium-low temperature minerals to medium-temperature minerals.The deposit should be located in the transitional position from middle-shallow structure to middle-middle structure.The deep part of the deposit should have good prospecting prospect,but the reverse dip of vein should be paid attention to.

关 键 词：控矿构造 断层性质 构造层次 找矿前景 桦甸板庙子 

分 类 号：P618.51[天文地球—矿床学]