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