湖南大坳矿区控矿构造特征及其对云英岩体型钨-锡矿的控制作用  

Characteristics of ore controlling structure in Da'ao mine,Hunan and its controlling function to greisen type tungsten and tin deposit

作　　者：曾志方 

机构地区：[1]湖南省地质矿产局四一八队,湖南娄底417000

出　　处：《矿产与地质》2006年第6期612-617,共6页Mineral Resources and Geology

基　　金：中国地质调查局国土资源大调查项目"湖南九嶷山-姑婆山地区锡金多金属矿评价"(项目编号:200110200024)

摘　　要：云英岩体型钨-锡矿为大坳矿区的主要矿床类型,呈隐伏—半隐伏产出,自上而下呈楼层式产出,形态为似穹状。通过对区内构造特征及其形成机制的分析,探讨了构造对钨、锡成矿的控制作用。提出了区内构造的多期脉动式活动控制了多阶段钨、锡矿化作用的新认识,即NNE—近SN向区域性断裂控制了矿床就位,弧形裂隙系统控制了矿体的产状和形态。The greisen-type tungsten-tin deposit is a major type of deposit in Da＇ao mine occurring as dome like concealed or semi-concealed ore body with several floors from top to bottom. The paper discusses the controlling function of the structure towards tungsten and tin mineralization based,on the analysis of structure characteristics and forming mechanism. A new understanding that the multiple stage structure pulse controlled multiple stage tungsten and tin mineralization is proposed. That is to say, the localization of the deposit is controlled by NNE to near SN trending ore-controlling faults. The arc fissure system controls the shapes and occurrences of the ore bodies

关 键 词：云英岩体型钨-锡矿 控矿机制 构造特征 湖南大坳 

分 类 号：P618.67[天文地球—矿床学] P618.44[天文地球—地质学]