| 广西龙头山次火山-隐爆角砾岩型金矿床 |
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| 引用本文：黄民智,陈伟十,李蔚铮,许仿实,李先粤.1999.广西龙头山次火山-隐爆角砾岩型金矿床[J].地球学报,20(1):39-46. |
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| 中文摘要: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。 |
| 中文关键词:次火山-隐爆角砾岩 金矿 电气石化 气成-高温热液 龙头山 广西 |
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| Longtoushan Gold Deposit of Subvolcanic-Cryptoexplosion Breccia Type, Guangxi |
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| Abstract: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. |
| keywords:subvolcanic-cryptoexplosion tourmalinization pneumato-hypothermal gold deposit Longtoushan Guangxi |
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