摘要
Kimin铜钴矿床位于刚果(金)加丹加铜钴多金属成矿带北西部,是该带内代表性超大型矿床。文章在剖析Kimin矿床成矿地质背景、矿体特征、控矿因素及找矿标志的基础上,探讨和厘定了矿床成因类型,建立了矿床成矿模式。结果表明,Kimin矿床铜钴矿体呈层状、板状及薄膜状产出,总体呈EW—近EW向展布,明显受控于地层岩性、近EW向层间断裂、氧化淋滤等作用;Kimin矿床由浅部至深部矿物由铜、钴次生氧化物逐渐转变过渡为原生硫化物;其成矿作用主要经历了原始沉积铜钴矿化、热液改造铜钴叠加富集及表生氧化淋滤富集等三个阶段,矿床成因类型为“沉积-热液改造型铜钴矿床”。
The Kimin Cu-Co deposit is located at the northwest part of the Katanga Cu-Co polymetallic metallogenic belt in Congo,and it is a representative super-large Cu-Co deposit in this belt.In this paper,the metallogenic geological setting,orebody characteristics,ore-controlling factor and ore-prospecting sign of Kimin Cu-Co deposit are analyzed,the genetic type of the deposit is discussed and determined,and the metallogenic model of the deposit is established.The result shows that the Cu-Co orebodies in Kimin deposit are in layered,tabular and laminar film shape,and generally distributed in EW-nearly to EW-trending direction,which are obviously controlled by the stratum lithology,structural fractures and oxidation leaching process.Copper and cobalt minerals gradually transition from copper and cobalt secondary oxides to primary sulfides from the shallow to the deep in Kimin deposit.The Cu-Co mineralization has mainly experienced three stages,primary sedimentary Cu-Co mineralization,hydrothermal alteration Cu-Co superposition enrichment,and supergene oxidation leaching enrichment.The genetic type of Kimin deposit is considered to be"sedimentary-hydrothermal reformed Cu-Co deposit"based on the above-mentioned comprehensive geological features.
作者
胡登攀
李伟
杨宪涛
杨帆
王新富
HU Dengpan;LI Wei;YANG Xiantao;YANG Fan;WANG Xinfu(Yunnan Copper Mineral Resources Exploration Co.,Ltd.,Kunming 650051,Yunnan,China;Faculty of Land and Resource Engineering,Kunming University of Science and Technology,Kunming 650093,Yunnan,China)
出处
《矿产与地质》
2022年第3期516-523,共8页
Mineral Resources and Geology
基金
云南省万人计划青年拔尖人才项目(编号:YNWR-QNBJ-2018-093)
昆明理工大学重点学科建设项目(编号:14078384)共同资助。
关键词
铜钴矿床
地质特征
成矿模式
矿床成因
刚果(金)
Cu-Co deposit
geological characteristics
metallogenic model
deposit genesis
Congo
