| 刘玖芬.黄铁矿中不同赋存状态金的测试及意义
—以胶莱盆地金矿中黄铁矿为例[J].地质与勘探,2011,47(5):823-827 |
| 黄铁矿中不同赋存状态金的测试及意义
—以胶莱盆地金矿中黄铁矿为例 |
| Test on Different Occurrence States of Gold in Pyrite and Its Significance—An Example of Pyrite From Gold Mines in the Jiaolai Basin |
| 投稿时间：2010-07-10 修订日期：2011-01-06 |
| DOI： |
| 中文关键词: 主成矿阶段黄铁矿 晶格金 自然金 石英包体金 |
| 英文关键词: main mineralization stage of pyrite, crystal lattice gold, native gold, quartz inclusion gold |
| 基金项目:国家重大基础研究973 项目(2009CB421000)资助 |
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| 中文摘要: |
| [摘要]本文论述了黄铁矿中晶格金、自然金、石英包体金的分离技术及测试方法,它可用于研究
金矿载金矿物黄铁矿中不同赋存状态金与成矿的关系。运用本方法对胶莱盆地典型金矿中主成矿阶段
黄铁矿三种赋存状态的金进行了测试,发现以自然金为主,且自然金含量比例差别不大,说明盆地中的
金矿可能具有相同成矿流体和环境。通过对含矿与不含矿黄铁矿中离子晶格金含量研究,进行了靶区
预测验证。研究发现黄铁矿中存在石英包体金,且部分金矿中石英包体金含量较高,普通测试方法可能
丢失该类金,造成样品分析结果偏低,进而出现丢矿或资源量估算不准确的现象。 |
| 英文摘要: |
| Abstract:To reveal the relationships between different occurrence states of gold-bearing minerals in pyrite and mineralization, we present the separation and test methods of crystal lattice gold, native gold and quartz inclusion gold in pyrite. Then we have made tests on three occurrence states of gold in the main mineralization stage of pyrite from typical gold deposits in the Jiaolai basin. The result shows that native gold dominates in this pyrite and varies little in content proportion, which implies the same ore-forming fluid and metallogenetic background of gold deposits in the basin. Through tests on the crystal lattice gold contents from the ore-bearing and gold-free pyrite, we carried out prospect prediction and verification to the target areas. New discovery is the existence of quartz inclusion gold in pyrite, and the gold content is relatively high in some gold deposits. This work also shows that tests by com mon methods may ignore such gold, and may result in low content from analysis, leading to ore loss or inaccurate resource estimates. |
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