闽西南桃坪山矿区铅锌多金属矿地球化学特征和成矿要素  

Geochemistry Characteristics and Metallogenic Factors of Lead-zinc Polymetallic Deposits in Taopingshan Mining Area,Southwestern Fujian

作　　者：倪建辉[1] Ni Jianhui(The No.8 Geological Team of Fujian,Longyan 364012,Fujian)

机构地区：[1]福建省第八地质大队,福建龙岩364012

出　　处：《福建冶金》2025年第2期13-17,共5页Fujian Metallurgy

摘　　要：桃坪山矿区位于福建省连城县境内,为一铅锌多金属矿床,在充分收集和吸收矿区地质资料的基础上,系统地研究分析了桃坪山矿区地质、地球化学及科研资料,认为桃坪山矿区晚古生代及晚中生代构造岩浆演化及与成矿相关的成矿要素时空分布特征是制约区内找矿的重要基础地质问题。对矿区开展黄铁矿电子探针分析,结果显示成矿热液主要来自火山岩浆热液;硫、铅同位素示踪地球化学特征分析,推断成矿过程中的硫主要来源于下地壳或上地幔,铅来源于造山带和上地壳。结合区域其他典型矿床,提取成矿要素,以期指导闽西南地区在推覆体之下、煤系地层之下、中生代火山—沉积地层之下找该类矿床。The Taopingshan mining area is located in Liancheng county,Fujian province.It is a lead-zinc polymetallic deposit.On the basis of fully collecting and absorbing the geological data of the mining area,systematically studied and analysed the geological,geochemistry and scientific data of the Taopingshan mining area,it is considered that the evolution of Late Paleozoic and late Mesozoic tectono-magmatic rocks and the spatial-temporal distribution of ore-forming factors are the important basic geological problems that restrict the prospecting in Taopingshan mining area.The results of EPMA analysis of pyrite in the mining area show that the ore-forming hydrothermal solution mainly comes from volcanic magmatic hydrothermal solution,and the characteristics of sulfur,lead isotope tracer geochemistry are analyzed,it is inferred that sulfur in ore-forming process mainly comes from lower crust or upper mantle,and lead comes from orogenic belt and upper crust.Based on other typical deposits in the region,ore-forming factors are determined to guide the prospecting for these deposits under the nappe,coal measures and Mesozoic volcanic-sedimentary strata in southwestern Fujian.

关 键 词：铅锌多金属矿 地球化学特征 成矿要素 

分 类 号：P61[天文地球—矿床学]