云龙县旧州南山铁金矿床地质特征与控矿因素分析

The Geologic Features and Ore-controlling Factors of Iron-gold Deoposit in Nanshan,Jiuzhou,Yunlong County

通过对云龙旧州南山铁金矿床的赋矿地层岩性、控矿构造、围岩蚀变、矿化特征的研究,同时与典型矿床(胶东金矿田)对比,可知云龙县旧州南山铁金矿床的主要控矿要素是多期次断裂构造、高孔隙的石英砂岩、煌斑岩脉及强烈的蚀变作用(硅化、黄铁矿化等),矿床是明显受构造控制的、与岩浆热液活动密切相关的石英脉型、蚀变岩型金矿床。

The ore-bearing strata lithology,ore-controlling structure,wall rock alteration,mineralization characteristics of irongold deoposit in Nanshan,Jiuzhou,Yunlong county is researched;and comparing with the typical deposit(Jiaodong gold ore field),we thought that the main ore-controlling factors of the iron-gold deoposit in Nanshan,Jiuzhou,Yunlong county are:multi-stages fracture structure,high pore quartz sandstone,lamprophyre vein,as well as the strong alteration(silicification,pyritization,etc.);the deposit is obviously controlled by tectonics,which is closely associated with magmatic hydrothermal fluids activity-the quartz vein type,altered rock type gold deposit.