陕西镇安县东阳钨矿地质特征及成矿条件分析

Geological characteristics and metallogenic conditions of Dongyang tungsten deposit,Zhen'an County,Shaanxi Province

东阳钨矿床位于南秦岭多金属成矿带,矿体受背斜构造及其派生断裂构造控制明显,近东西向的背斜褶皱构造和北北东向横张节理交汇处是富钨石英脉带的有利地段,矿体赋存于燕山期酸性侵入岩与白云质碳酸盐岩接触带附近,矿石类型主要为云英型钨矿体、石英细脉带型及残坡积砂型,初步研究表明,沿富钨石英脉带、云英型钨矿体倾向向深部勘查,有望发现位于隐伏岩体接触带附近的矽卡岩型钨矿。

Dongyang tungsten deposit is located in the South Qinling polymetallic metallogenic belt.The ore body is obviously controlled by the anticline structure and its derived fault structure.The intersection of the nearly East-West anticline fold structure and the north-north-east transverse joint is the favorable section of the tungsten rich quartz vein belt.The ore body is located near the contact zone between Yanshanian acid intrusive rock and dolomitic carbonate rock,and the ore type is mainly greisen type tungsten ore body The preliminary study shows that the skarn type tungsten deposit is likely to be found near the contact zone of the concealed rock mass.