| 王 鹏.辽西北票二道沟金矿的矿化特点及其意义[J].地质与勘探,2013,49(3):429-436 |
| 辽西北票二道沟金矿的矿化特点及其意义 |
| Magmatic Activities and Copper and Gold Mineralization in Northern Damaoqi, Inner Mongolia |
| 投稿时间：2012-12-14 修订日期：2013-01-20 |
| DOI： |
| 中文关键词: 矿化特征 结构构造 热液活动 二道沟金矿 |
| 英文关键词: gold deposit, texture and structure, hydrothermal activities Erdaogou gold deposit, Western Liaoning |
| 基金项目:黄金集团公司科研项目、重点基础研究发展规划项目(2009CB421002)、111计划项目(B07011)、长江学者和创新团队发展计划(IRT1083)及华北克拉通破坏在太行山带的金属成矿效应(90914002)联合资助。 |
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| 中文摘要: |
| [摘要]本文详细研究了辽西二道沟金矿的矿化特征、矿石结构、构造和主要载金矿物黄铁矿，在此基础上分析讨论了成矿温度、热液活动期次和活动方向。研究表明二道沟金矿的形成经历了热液期和表生期，热液期又分为石英-黄铁矿阶段、石英-多金属硫化物阶段、石英-碳酸盐阶段；且可能存在多期次的热液活动，每一期热液相互叠加改造，成矿热液早期温度较高，大于450℃，但金属矿物大量沉淀时温度较低，在150～300℃，属中低温成矿。金在III、V号矿脉中的分布在水平方向和垂直方向都存在明显不均匀性，金品位高值区从上向下都有向南东方向发展的趋势，指示成矿热液可能来自南东方向。本文详细研究了二道沟金矿III、V号脉金的富集规律，对于指导矿山生产及资源勘查具有重要的指导意义。 |
| 英文摘要: |
| Abstract:This paper studies the mineralization characteristics, ore texture, the structure and the main gold-hosting mineral pyrite in the Erdaogou gold deposit of western Liaoning. And it further discusses the mineralization temperature, epoch and direction of hydrothermal activities The results show that the deposit has experienced hydrothermal and hypergene stages. The hydrothermal stage can be subdivided into quartz-pyrite, quartz-polymetallic sulfide and quartz- carbonate three phases. There may be several episodes of hydrothermal activities, and the former was superposed by the latter. The metallogenic hydrothermal solution had high temperature in the early time, while the metallic mineral mainly precipitated at lower temperature. The gold in the No.III and No.V ore vines occurs horizontally and vertically with inhomogeneous distribution, and the gold grade tends to be higher towards the southeast from the top to the bottom. This may indicate that the metallogenic hydrothermal solution possibly came from the southeast. The detailed research in this work on rules of gold enrichment of veins No. III and No.V has guidance significance for the production of the mine as well as resource exploration. |
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