闽中梅仙铅锌钼多金属矿地质特征及成矿模式  

Geological characteristics and metallogenic model of Meixian Pb-Zn-Mo polymetallic deposit in central Fujian province

作　　者：肖娥[1,2] 陈振宁[1,2] 居维伟 龚斌 肖晓牛[1,2,3] 刘小胡[1] 张悦秋 XIAO E;CHEN Zhenning;JU Weiwei;GONG Bin;XIAO Xiaoniu;LIU Xiaohu;ZHANG Yueqiu(East China Mineral Exploration and Development Bureau for Non-Ferrous,Nanjing 210007,China;School of Earth Sciences and Engineering,Nanjing University,Nanjing 210093,China;Fujian Jindong Mining Co.,Ltd.,Sanming Fujian 365101,China)

机构地区：[1]江苏省有色金属华东地质勘查局,南京210007 [2]南京大学地球科学与工程学院,南京210093 [3]福建金东矿业股份有限公司,福建三明365101

出　　处：《有色金属（矿山部分）》2022年第2期103-109,共7页NONFERROUS METALS(Mining Section）

基　　金：福建省自然科学基金项目(2018J01143)。

摘　　要：闽中梅仙铅锌钼多金属矿是武夷山成矿带的重要组成部分。结合新近在矿区开展的地质工作,对梅仙矿区矿床矿体特征和矿石特征等进行了阐述。结果表明,铅锌矿体呈层状和似层状分布,矿石主要以块状、条带状和层纹状构造为主;钼矿体形态常受裂隙及岩体影响,矿石主要呈膜状构造、网脉状构造、脉状—细脉状构造和薄层状构造等。通过野外观察和实验室显微镜观察,综合前人研究成果,认为矿区铅锌钼多金属矿系块状硫化物矿床与斑岩成矿系统耦合叠加的产物,成矿作用时代大概可划分为三个阶段,即:1)初始火山喷流—同生沉积成矿阶段;2)区域变质及成矿作用阶段;3)岩浆热液叠加—改造成矿作用阶段,并据此建立了可能的成矿模式。所得成矿模式已得到近期勘探工作验证。The Meixian Pb-Zn-Mo polymetallic deposit in central Fujian is an important part of the Wuyishan metallogenic belt.Combined with the geological work recently carried out in the mining area,this paper expounded the ore body characteristics and ore characteristics of the deposit in Meixian mining area.The lead-zinc ore body is distributed in layers and quasi layers,and the ore is mainly in massive,banded and laminated structures.The shape of molybdenum ore body is often affected by fractures and rock mass,the ore is mainly in membrane structure,network vein structure,vein fine vein structure,and thin layer structure.Based on field observations and laboratory studies under a microscope,and combined with previous research results,it is believed that the lead-zinc-molybdenum polymetallic ore-system massive sulfide deposit in the mining area is a product of the coupling and superposition of the porphyry metallogenic system.The mineralization age can be roughly divided into three stages:1)Initial volcanic eruption-syngenetic sedimentation and mineralization stage;2)Regional metamorphism and mineralization stage;3)Magmatic hydrothermal superposition-transformation mineralization stage.And a possible metallogenic model is established according to these three stages.The resulting metallogenic model has been verified by recent exploration work.

关 键 词：铅锌钼多金属矿 地质特征 成矿模式 闽中梅仙 武夷山成矿带 构造 

分 类 号：P618.4[天文地球—矿床学] P611[天文地球—地质学]