刚果(金)东北部基巴里金矿地质特征及成因  

Geological characteristics and metallogenic genesis of the gold deposit in Kibali,Northeast Democratic Republic of Congo

作　　者：盛涛 陈德稳 马林霄 卢天骄 曾旭 詹勇 郑长友 SHENG Tao;CHEN Dewen;MA Linxiao;LU Tianjiao;ZENG Xu;ZHAN Yong;ZHENG Changyou(Sinotech Minerals Exploration Co.,Ltd.,Beijing 100012,China;Sinodrill Co.,Ltd.,Beijing 100012,China)

机构地区：[1]中色地科矿产勘查股份有限公司,北京100012 [2]北京中资环钻探有限公司,北京100012

出　　处：《矿产勘查》2021年第1期11-18,共8页Mineral Exploration

摘　　要：基巴里(Kibali)金矿产于刚果(金)东北部太古宙绿岩带中的造山带型金矿,矿床的赋矿围岩主要为绿岩带中的火山沉积砾岩、基性岩及条带状硅铁建造岩石(BIF),围岩蚀变为成矿前期的碳酸盐化和成矿期的黄铁矿化,形成以浸染状和脉状为主的矿石类型。Kibali金矿成因还存在诸多争议。通过搜集相关资料文献,结合区域地球化学数据分析表明金矿形成于新太古代,在伊伯尼安、基巴拉造山活动和泛非运动期间再活化运移。绿岩带中的火山碎屑岩类为金矿的形成提供了重要的硫源。The Kibali gold deposit located in the Moto Granite-Greenstone Belt of Northeast DRC is an orogenic gold deposit.The wallrock of the gold deposit is the volcanic clasts,meta-mafic rocks and BIF of the Kibali greenstone belts.The most significant host rock alteration of pre-mineralization and syn-mineralization are Fe-carbonate alteration and pyritic and silica alteration.The gene⁃sis of Kibali gold deposit is still controversial.With the analysis of the age datas,the formation and evolution of the Kibali Greenstone Belt and neighbouring terranes are hypothesised.The gold mineralisation was formed during neoarchean and reactived during Eburnean and Pan-Africa orogen.Isotope date in Kibali and neigbouring gold deposits indicate that the sulfur source is from the volcaniclastic u⁃nits of the greenstone belt.

关 键 词：金矿 绿岩带 地质特征 矿床成因 基巴里 刚果(金) 

分 类 号：P618.51[天文地球—矿床学]