摘要
龙头山金矿床与燕山晚期流纹斑岩、角砾熔岩等次火山岩相有关。据围岩和构造条件将矿体分为次火山隐爆角砾岩类、接触带－构造角砾岩类和围岩中断裂构造角砾岩等３种类型。主要金矿化与电气石化、硅化关系密切。通过矿石组成、Ａｕ及其伴生元素分布特征，以及Ｓ、Ｐｂ、Ｈ、Ｏ、Ｃ等稳定同位素、流体包裹体地球化学和成矿物理化学条件等综合研究结果，认为龙头山矿床是与次火山隐爆角砾岩有关的气成－高温热液型金矿床。
The Longtoushan gold deposit is related to late Yanshanian subvolcanic rocks such as rhyolitic porphyry and breccia lava. According to the wall rocks and structural conditions the ore bodies may be divided into three types :subvolcanic_cryptoexplosion breccia type,contact zone_structural breccia type,and wall rock_structural breccia type.There is a close relationship between gold mineralization and tourmalinization and silicification. According to a study on the ore composition,distributive characteristics of gold and its associated elements,stable isotopes(S,Pb,H,O and C),geochemistry of fluid inclusions and physical_chemical conditions for mineralization,the authors conclud that the Longtoushan deposit is a pneumato_hypothermalgold deposit related to subvolcanic_cryptoexplosion breccia.
关键词
金矿床
次火山
隐爆角砾岩型
矿西
subvolcanic_cryptoexplosion tourmalinization pneumato_hypothermal gold de_ posit Longtoushan,Guangxi
