内蒙古自治区镶黄旗新宝力嘎铜多金属矿地质特征及成因浅析

Geological characteristics and genesis of Xinbaoliga copper polymetallic deposit in Xianghuang Banner,Inner Mongolia Autonomous Region

新宝力嘎铜多金属矿新共圈定矿化蚀变带13条。蚀变带总体呈北东、北西向延伸展布,长几米至数百米,宽几米至数百米不等,主要产于上侏罗统白音高老组(J3b)、玛尼吐组(J3mn)地层、侏罗纪晚世花岗斑岩体及二者的接触带上。蚀变带岩石普遍具强弱不同程度的褐铁矿化、硅化、绿帘石化及碳酸盐化等蚀变,部分见孔雀石化、蓝铜矿化、金矿化、钨矿化、钼矿化及铅锌矿化等。本文通过研究区域地质背景、矿区地质概况及矿化体特征,总结了该区地质特征及矿床成因。

The Xinbaoliga copper polymetallic deposit has identified 13 mineralized alteration zones.The alteration zone generally extends in a northeast to northwest direction,ranging in length from several meters to several hundred meters and width from several meters to several hundred meters.It mainly occurs in the Upper Jurassic Baiyingolao Formation(J3b),Manitu Formation(J3mn)strata,Late Jurassic granite porphyry bodies,and the contact zone between the two.The rocks in the alteration zone generally exhibit varying degrees of alteration,such as limonitization,silicification,epidote,and carbonation,with some showing peacock mineralization,blue copper mineralization,gold mineralization,tungsten mineralization,molybdenum mineralization,and lead-zinc mineralization.This article summarizes the geological characteristics and deposit genesis of the area by studying the regional geological background,geological overview of the mining area,and characteristics of mineralized bodies.