中非铜矿带恩古巴群铜多金属矿床地质特征与找矿潜力  

Geological characteristics and prospecting potential of Cu polymetallic deposit in Nguba Group,Central African Copperbelt

作　　者：汤钰御 刘高杰 陈向平 谢建平[1,2] 王鹏飞 王纪昆[1,2] 王建青 冀建军 TANG Yuyu;LIU Gaojie;CHEN Xiangping;XIE Jianping;WANG Pengfei;WANG Jikun;WANG Jianqing;JI Jianjun(Tianjin North China Geological Exploration General Institute,Tianjin 300170,China;Tianjin North China Geological Explora-tion General Institute Co.,Ltd.,Tianjin 300170,China)

机构地区：[1]天津华北地质勘查总院,天津300170 [2]天津华北地质勘查总院有限公司,天津300170

出　　处：《矿产勘查》2024年第8期1445-1455,共11页Mineral Exploration

基　　金：天津华北地质勘查局科研项目(HK2022-B23、HK2024-B01);中国地质调查局项目(DD20190439)联合资助。

摘　　要：中非铜矿带是世界上最重要的以沉积岩为容矿岩石的铜钴多金属成矿区,本文通过对中非铜矿带恩古巴群典型铜多金属矿床的地质特征、地球化学特征、成矿作用和矿床规模、矿石品位等几个方面进行对比分析,获得以下认识:(1)恩古巴群存在多个具有重要经济价值的铜(锌铅银)多金属矿床,以Kamoa-Kakula、Fishtie、Lonshi和Kipushi等为典型代表,这些矿床规模大、品位高,表明恩古巴群也是本区重要的含矿层位之一;(2)恩古巴群典型矿床多位于同沉积断层附近,新元古代加丹加盆地中温、高盐度的氧化性含矿流体通过底辟作用在恩古巴群底部沉积形成层状矿体;(3)恩古巴群地层在中非铜矿带分布广泛,前陆盆地、穹隆区域外围均是良好的找矿地段,具有巨大的资源潜力和找矿前景。The Central African Copperbelt is the most important sedimentary-hosted Cu polymetallic metal⁃logenic area in the world.This paper makes a comparative analysis on the geological characteristics,geochemical characteristics,mineralization,deposit scale and ore grade of typical deposits in the Central African Copperbelt.The main results of this research can be summarized as follows:(1)multiple economically significant Cu(Zn-Pb-Ag)deposits have been discovered in the Nguba Group,with Kamoa-Kakula,Fishtie,Lonshi,and Kipushi as typical representatives.The large scale and high grade of these deposits indicate that Nguba Group is also one of the important ore-bearing horizons in the Central African Copperbelt.(2)The typical deposits of the Nguba Group are mostly located near the synsedimentary faults.The oxidizing ore-bearing fluid with medium temperature and high salinity in Neoproterozoic Katanga Basin deposited the bedded ore bodies at the bottom of the Nguba Group through diapirism;(3)The Nguba Group are widely distributed in the Central African Copperbelt.Foreland basin and the periphery of dome region are good prospecting areas,and it has huge resource potential and prospecting prospect.

关 键 词：恩古巴群 含矿层位 铜(锌铅银)多金属矿床 中非铜矿带 

分 类 号：P617[天文地球—矿床学]