江西宁都县廖坑矿区钨矿地质特征及成因分析

Geological characteristics and genetic analysis of tungsten ore in Liaokeng Mining area, Ningdu County, Jiangxi Province

本文通过分析江西宁都县廖坑矿区钨矿地质条件和成矿背景,对矿区构造、地层、岩浆岩、断裂构造与成矿的关系和矿床成因进行分析和总结。研究表明:区内钨多金属矿产主要是分布在侏罗纪中世花岗岩体内外接触带的构造裂隙脉状钨矿床。矿化与构造关系密切,区域构造运动强烈,岩浆活动频繁,是区内重大的构造-热液事件。同时,形成蚀变、溶矿的基本岩石类型及溶矿空间,沿构造带上升的热液形成矿体、矿化带。矿区内的北东、北东东向断裂及其裂隙发育,为成矿提供更为有利的构造环境。

By analyzing the geological conditions and metallogenic setting of tungsten deposit in Liaokeng mining area,Ningdu County,Jiangxi Province,this paper analyzes and summarizes the relationship between the structure,stratigraphy,magmatic rock,fault structure and mineralization and the genesis of the deposit.The results show that the tungsten polymetallic minerals in this area are mainly distributed in the tectonic fracture vein tungsten deposits in the contact zone of the Middle Jurassic granite.Mineralization is closely related to structure,regional tectonic movement is strong,magmatic activity is frequent,is an important tectono-hydrothermal event in the region.At the same time,the basic rock types and dissolving Spaces of alteration and ore are formed,and the hydrothermal fluids rising along the tectonic belt form ore bodies and mineralization zones.The development of NEE and NEE trending faults and fissures in the mining area provides a more favorable tectonic environment for mineralization.