摘要
辽东地区广泛分布着与晚中生代华北克拉通破坏相关的金矿床,根据克拉通破坏与成矿效应研究预测该区具备较大的金资源潜力,且蚀变岩型金矿床和深部是重点找矿突破方向。五龙金矿区位于鸭绿江成矿带南段,目前五龙黄金矿业有限责任公司主要是开采受区内三级构造断裂控制的石英脉型金矿。最近,在五龙金矿区内二级构造北东向鸡心沟断裂带发现水平厚度超过220m的细脉蚀变岩型金矿(化)体,深度619m,22m连续采样金品位为0.12~6.50g/t(平均2.205g/t),进一步勘探与分析正在进行之中。五龙矿集区二级构造北东向鸡心沟断裂带深部细脉蚀变岩型金矿体的发现,实证了华北克拉通破坏在鸭绿江成矿带诱发的蚀变岩型金矿类型巨大找矿潜力,也进一步表明寻找蚀变岩型金矿是辽东地区金资源勘查突破的重要方向。
Gold deposits are widely distributed in the Liaodong region and are genetically related to Late Mesozoic destruction of the North China Craton.Studies of craton destruction and its related metal mineralization predict substantial gold resource potential in this region,while identifying altered-rock type gold deposits and deep-seated targets is considered the key exploration breakthrough.The Wulong gold mining area,located in the southern section of the Yalu River metallogenic belt,historically and present focuses on extracting quartz vein type gold deposits controlled by Tertiary structural faults.Recently,the Wulong Gold Mine discovered a vein-filled altered rock type gold ore(mineralized)body at 619m depth with a>220m horizontal thickness.It is controlled by the NE-trending Jixingou fault zone,the secondary structure of the Yalu River Fault Zone,yielding gold grades of 0.12g/t to 6.50g/t(continuous 22-meter sample with an average grade of 2.205g/t).Further exploration and analysis are underway.The discovery of deep-seated vein altered rock type gold orebody along the northeast trending Jixingou Fault Zone in the Wulong Mining Area further confirms the enormous prospecting potential of altered rock type gold deposits induced by the destruction of the North China Craton in the Yalu River metallogenic belt.This further demonstrates that targeting altered-rock type gold deposits represents a critical pathway for breakthrough discoveries in gold exploration within Liaodong region.
作者
曾庆栋
汪凤伟
刘福兴
田树海
杨进辉
朱日祥
ZENG QingDong;WANG FengWei;LIU FuXing;TIAN ShuHai;YANG JinHui;ZHU RiXiang(State Key Laboratory of Lithospheric and Environmental Coevolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100049,China;Liaoning Wulong Gold Mining Co.,Ltd,Dandong 118000,China;Liaoning Nonferrous Geological 103 Team Co.,Ltd,Dandong 118000,China)
出处
《岩石学报》
北大核心
2025年第9期2889-2896,共8页
Acta Petrologica Sinica
基金
“地球深部探测与矿产资源勘查国家重大专项”(2024ZD1001301)资助.
关键词
辽东金矿省
蚀变岩型金矿
五龙金矿集区
Liaodong gold ore province
Altered type gold deposit
Wulong gold ore concentration area
作者简介
第一作者:曾庆栋,男,1964年生,研究员,博士生导师,主要从事金属矿成矿作用与找矿预测研究,E-mail:zengqingdong@mail.iggcas.ac.cn;通讯作者:朱日祥,男,1955生,研究员,博士生导师,中国科学院院士,主要从事固体地球科学研究,E-mail:rxzhu@mail.iggcas.ac.cn。
