吉林省安图县海沟金矿床地质特征及其形成机制

本文从地质背景、控矿因素、围岩蚀变、矿化富集规律等方面扼要介绍了海沟金矿床的地质特征，并通过构造一岩浆活动、热液形成及演化、成矿物质的富集和沉淀等方面规律阐述了海沟金矿床的形成机制。海沟金矿床是一处中高温热液石英脉型大型矿床，赋矿岩石为含金石英脉。含金石英脉受北东一北北东向断裂构造控制．延伸稳定，矿化均匀．且被围限在海沟岩体内。含金石英脉的形成主要经历了岩体侵位及热液形成、容矿构造形成及石英脉充填、微细裂隙形成及富集成矿等4个阶段。

The geologic features and forming mechanism of Haigou Au deposit, Antu County, Jilin Province

The geologic features of Haigou Au deposit are briefly introduced based on geologic settings,ore-control factors,wall-rock alteration,mineralization and enrichment regularities.The forming mechanism of Haigou Au deposit is discussed based on tectononmagmatic activation,hydrothermal process and evolutionary process,enrichment and deposition.The Haigou Au deposit is a large meso-hypothermal quartz vein one which is controlled by NE-NNE faulted structures,showing stable extension and homogeneous mineralization within Haigou rock body.The forming of the Au-bearing quartz vein mainly underwent 4 stages(Emplacement of rock body and hydrothermal forming,forming of host structure and quartz vein filling,forming of microfissure and mineral enrichment).