江西省于都县银坑贵多金属矿田矿化特征、成矿控制及找矿方向

MINERALIZATION CHARACTERS ORE-CONTROLLING AND ORE-SEARCHING PROSPECT IN YINKENG MULTIMETAL OREFIELD JIANGXI PROVINCE

于都银坑贵多金属矿田有破碎岩蚀变型、层问破碎带型、岩体接触带型。硫锰矿型、铁锰帽型、黑土角砾型等六种矿化类型。主要控矿因素为地层、岩性、岩浆岩、构造和次火山岩体接触带构造四种。矿化带严格受破碎带控制，也受不同地层时代和岩浆热场的影响。矿带往往在主干断裂旁侧、多组裂隙交汇处及褶皱轴部横张裂隙发育部位定位；不同的地层时代有不同的有益元素组合，不同的岩性又对元素的富集成矿有特定的作用；岩浆岩的多期活动为矿床的形成提供了有利条件。本矿田成因类型属岩浆期后中低温热液充填交代矿床。通过矿床模式的建立，本区找矿方向的主要标志是：多组构造结点、特定的赋矿层位以及次火山构造周围。

YinKeng mujtimetal orefield is an ore-searching prospect area with good ore-forming conditions and distinct mineralization characters in Yudu County Jiangxi Province. On the basis ofstudying results of geological investigation and summary of mineralized types and characters inthis area, the authors illustrated the ore-controlling factor and ore genesis and also pointed outthe metallogenic model and ore-searching prospect in the area.