冀东铜硐子铜镍钴矿床地质特征及找矿方向分析  

Geological characteristics and exploration prospecting of the Tongdongzi Cu-Ni-Co deposit in the eastern Hebei Province

作　　者：崔伟[1] 徐林刚[2] 高孝敏[1] 王晨光 马文杰 孙香君 林秀瑞 CUI Wei;XU Lingang;GAO Xiaomin;WANG Chenguang;MA Wenjie;SUN Xiangjun;LIN Xiurui(No.2 Geological Party,Hebei Bureau of Geology and Mineral Resources Exploration,Tangshan 063000,Hebei,China;China University of Geosciences(Beijing),Beijing 100083,China;Hebei Key Laboratory of Strategic Critical Mineral Resources,Hebei GEO University,Shijiazhuang 050031,Hebei,China)

机构地区：[1]河北省地质矿产勘查开发局第二地质大队,河北唐山063000 [2]中国地质大学(北京),北京100083 [3]河北地质大学资源与环境工程研究所,河北石家庄050031

出　　处：《矿产勘查》2023年第8期1388-1401,共14页Mineral Exploration

基　　金：河北省地质矿产勘查开发局地质科技项目“冀东铁矿地球物理勘查模型与找矿应用研究(13000023P0069B4101530)”资助。

摘　　要：冀东铜硐子铜镍钴矿床为华北陆块北缘燕冀成矿带代表性岩浆型铜镍硫化物矿床,矿体小而富,矿化特征以深部熔离-贯入式矿化为主。区域内同一构造背景的中生代印支期基性-超基性岩株在其西南方向仍有分布,为探讨铜硐子铜镍钴矿深部及其外围找矿潜力,本文总结了其地质特征,对比了该区域各基性-超基性岩以及同一成矿类型甘肃金川和吉林赤柏松含矿岩体的岩石地球化学特征,结果表明研究区各基性-超基性岩体来自同一源区,是同一原始岩浆分异演化的产物,且微量元素、稀土元素曲线形态、特征等与甘肃金川和吉林赤柏松矿区基本一致;同时推断解译了区内航磁异常引起原因。铜硐子铜镍钴矿床成矿模式和区域地球物理特征显示,该矿床深部仍有找矿潜力,其外围具备较好的找矿前景。The Tongdongzi Cu-Ni-Co deposit in eastern Hebei Province is a presentative magmatic type Cu-Ni sulfide deposit in the Yan-Ji metallogenic belt in North China Block.The high-grade ore occurs in a small maficultramaficultramafic rocks at the southwestern Tongdongzi deposit formed in the same geological background are widespread,indicating significant potential for exploration both at the deep and periphery of the Tongdongzi deposit.In this paper,we summarized geological features of the Tongdongzi deposit and compared bulk rock geochemical composi⁃tions with the mafic-ultramafic rocks from other localities in the Tongdongzi,the Jinchuan in Gansu Province,and the Chibosong in Jilin Province.The result shows that the mafic-ultramafic rocks in the Tongdongzi deposit are from the same source and underwent the same primary magma differentiation process.Furthermore,the trace ele⁃ment and rare earth element composition of the Tongdongzi samples are similar to the Jinchuan and Chibosong.In addition,we interpreted the aeromagnetic anomaly.The metallogenic model and regional geophysical characteristics of the Tongdongzi deposit suggest that the deep and periphery of the Tongdongzi deposit are highly potential for further exploration.

关 键 词：铜镍钴矿床 地质特征 找矿方向 铜硐子 冀东 

分 类 号：P612[天文地球—矿床学]