江西南城小竺萤石矿成矿作用及找矿方向  

Mineralization and prospecting direction of Xiaozhu fluorite deposit in Nancheng,Jiangxi Province

作　　者：占岗乐[1] 吴火星[1] ZHAN Gangle;WU Huoxing(Northwest Jiangxi Geological Party,Jiangxi Bureau of Geology and Mineral Exploration and Development,Jiujiang 332000,Jiangxi,China)

机构地区：[1]江西省地质矿产勘查开发局赣西北大队,江西九江332000

出　　处：《华东地质》2021年第3期302-309,共8页East China Geology

基　　金：江西省抚州市萤石矿资源调查评价(编号:赣自然资发[2018]133号)项目资助。

摘　　要：矿区位于武夷山成矿带之北部Cu-Pb-Zn-Ag-萤石成矿亚带,成矿条件优越。该文通过地质测量、槽探工程和钻探工程相结合的工作方法,结合已有的坑道工程,总结矿体的空间分布、赋存状态及控矿因素,开展成矿规律和成矿作用研究工作;通过对成矿地质体及成矿构造的综合研究,判断成矿时代,探讨成矿机理。研究表明:该矿床类型为中低温热液充填型萤石矿床,印支晚期的斑状黑云母花岗岩体为成矿提供物质来源,NE向主断裂及次生的压扭性断裂是矿区的主要导矿、贮矿构造。运用研究成果探明该萤石矿床资源储量达中型规模,扩大了萤石矿床的资源前景,并指明了找矿方向。The mining area is located in the Cu-Pb-Zn-Ag fluorite metallogenic subzone in the northern Wuyishan metallogenic belt,which has superior fluorite metallogenic conditions.This paper combines the working methods such as geological survey,trenching engineering and drilling engineering,summarizes the spatial distribution,occurrence state and ore-controlling factors of orebody according to the existing tunnel engineering,and carries out the research on metallogenic regularities and mineralization.Through the comprehensive study of the orebody and the metallogenic structure,the metallogenic age is judged and the metallogenic mechanism is discussed.It shows a medium-low temperature hydrothermal filling type fluorite deposit in the area,whose ore-forming material is derived from late Indosinian porphyritic biotite granite.The NE-trending main fault and secondary compression-torsional fault are the main ore-conducting and ore-storage structure in mining area.The study proves that the resource reserves of this fluorite deposit has reached the medium scale,which expands the resource prospects of the mining area,and points out the direction of prospecting.

关 键 词：萤石矿 矿床特征 成矿作用 江西南城 

分 类 号：P619.215[天文地球—矿床学]