| 解庆林,马东升,刘英俊.硅化作用形成机制的热力学研究──以锡矿山锑矿为例[J].地质找矿论丛,1996,(3):1-8 |
| 硅化作用形成机制的热力学研究──以锡矿山锑矿为例 |
| THERMAL DYNAMIC STUDY ON FORMING MECHANISM OF SILICIFICHTION-TAKING XIKUANG SHAN ANTIMONY DEPOSIT AS AN EXAMPLE |
| 投稿时间：1996-05-03 修订日期：1996-05-27 |
| DOI：10.6053/j.issn.1001-1412.1996.3. 001 |
| 中文关键词: 硅化作用 热力学方法 锡矿山锑矿 |
| 英文关键词: |
| 基金项目:国家自然科学基金 |
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| 中文摘要: |
| 应用热力学方法计算了不同温度和不同酸碱度条件下石英在水中的溶解度。结合地质资料对锡矿山锑矿硅化作用的形成机制进行了分析。研究表明;溶液在降温和酸化过程中均产生硅质沉淀,但温度降低起主要作用。根据定量计算,锡矿山锑矿硅化岩石是大量热液集中排泄形成的。溶液与原岩的重量比为147～190:1. |
| 英文摘要: |
| The solubility of quartz in water at different temperature and acidity-alkalinity is calculated by means of thermodynamics. Combining the thermodynamic results and geologic feature, we studied the forming mechanism of silcification of Xikuangshan antimony deposit. It is shown that a decline in temperature and acidification will result in the deposition of silica from solution. However, the decline in temperature are predominant. According to quantitative calculation, it is necessary for the formation of silicified rocks that a large amount of hydrothermal fluid discharged in ore region. The weight ratio of solution and original rock is 147-190 to 1. |
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