广西宝坛地区铜镍矿床地质特征及找矿潜力分析

Geological characteristics and prospecting potential analysis of copper-nickel deposits in Baotan Area,Guangxi

宝坛地区铜镍矿床是基性-超基性岩浆侵入,以岩浆熔离作用为主形成的硫化物铜镍矿床。本文通过分析地层、岩性、分异作用、蚀变作用、构造等多重控矿因素,结合近几年老矿山深部勘查成果及物化探资料综合分析,认为宝坛地区存在寻找岩浆熔离型和贯入型铜镍矿潜力,指出宝坛地区铜镍矿床的深部以及龙有-蒙洞口一带Cu-Ni-Co-Cr综合异常浓集中心蚀变的超基性岩是寻找铜镍矿的重点地段。

The copper-nickel deposit in Baotan area is a sulfide copper-nickel deposit formed mainly by basic-ultrabasic magma intrusion and melting-separation.Based on the analysis of strata,lithology,differentiation,alteration,structure and other multiple ore-controlling factors,combined with the deep exploration results and geophysical and geochemical data of the old mines in recent years,it is concluded that there is potential to find magmatic melting-separation and penetrating copper-nickel ore in Baotan area.It is pointed out that the ultrabasic rock in the deep part of copper-nickel deposit in Baotan and the alteration of Cu-Ni-Co-Cr complex abnormal concentration center in Longyou-Mengdongkou area are the key areas to find copper-nickel deposit.