摘要
下桐岭二号岩体位于华南加里东褶皱带的武功山隆起区中段、武功山复背斜向东倾伏与苑坑复式倒转背斜向西倾伏的交接部位。区内形成与花岗岩有关的石英网脉状为主的气成热液矿床。下桐岭花岗岩富Si O2,K2O,贫Na2O,低磷花岗岩,属于过铝质高钾钙碱性岩系。岩体经历了高度的花岗岩浆演化,这与钨矿化的关系非常密切。岩体钾长石化发育,为本区钨成矿提供了物质基础。岩体的侵入使本区处于相对上升隆起而产生拉伸应力作用使各组裂隙产生不同程度的张开,提供了成矿所需的开放环境,利于钨矿的沉淀。
Xiatongling Granite NO.2 is located in the median of the South China Caledonian fold belt, intersection of the Wugongshan complex anticline and the Yuankeng complex overturn anticline. There are mostly Quartz stockwork vein type pneumatolytic hydrothermal deposit related to the granite in this area. Granite of Xiatongling are richer in Si O2, K2 O, lower in Na2 O, and are peraluminous high-K calc-alkaline series. Granite experienced highly evolution, which is very close to the tungsten metallogenesis. The K-feldspar alteration of the rock is foundation of the mineralization of tungsten. The intrusion of granite make the area rise in relative uplift and produce tensile stress, so that the cracks in each group have different degrees of opening and provide the open environment for mineralization, which is beneficial to the sedimentation of tungsten.
出处
《世界有色金属》
2017年第16期168-170,共3页
World Nonferrous Metals
关键词
钨矿
花岗岩
下桐岭
江西
Tungsten Deposit
Granite
Xiatongling
Jiangxi Province
