河南省卢氏县八宝山铜矿床地质特征及成因

Geological Characteristics and Genesis of the Babaoshan Copper Deposit in Lushi County of Henan Province

河南省卢氏县八宝山岩体属晚侏罗世中酸性浅成小岩体。结合前人研究成果,通过研究该矿区地质特征和物化探成果,结合本次普查中对成矿理论的实地钻探工程验证,研究认为八宝山矿床类型为斑岩-矽卡岩型矿床,且矿床由内向外具有明显的高中低温分带性,矿床三种分带围绕岩体呈环状分布。成矿模式为以岩体中心相为中心至外侧边缘相,依次为斑岩型-矽卡岩型-热液型三条环带模式。研究区最新提交备案成果(普查):铁矿石量2389.10万吨,硫铁矿石量334.00万吨,铜金属量108962吨,提交一中型铜矿床。通过研究该矿床成因及成矿模式,为研究区资源储量提升找到工作靶区,也为寻找相同类型矿床或者附近隐伏矿床提供借鉴依据。

The Babaoshan pluton in Lushi County of Henan Province belongs to a small intermediate-acid epipelagic pluton in Late Jurassic.Combined with the previous research results,through the study of the geological characteristics of the mining area,the results of geophysical and geochemical exploration,and the field drilling engineering verification of the metallogenic theory in this general survey,it is inferred that the Babaoshan deposit is a porphyry-skarn type deposit,and the deposit has obvious high and low temperature zonation from inside to outside.Three kinds of zones of the deposit are distributed in rings around the rock mass.The metallogenic model is from the core facies of rock mass to the outer marginal facies,and it is composed of three belt patterns,namely,porphyry type,skarn type and hydrothermal type.The latest results(general survey)of the research area contain iron ore amount of 23.891 million tons,sulfur iron ore amount of 3.34 million tons,copper metal amount of 108,962 tons,and a medium-sized copper deposit is submitted.By studying the genesis and metallogenic model of the deposit,it is expected to discover target area for the improvement of resource reserves in the study area,which will also provide reference for finding the same type of deposits or nearby hidden deposits.