| 硅化作用形成机制的热力学研究──以锡矿山锑矿为例 |
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| 引用本文： | 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,1996,11(3):1-8. |
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| 作者姓名： | 解庆林 马东升 刘英俊 |
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| 作者单位： | 南京大学地球科学系金属矿床成矿作用国家重点实验室 |
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| 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和水中的溶解度。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。
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| 关 键 词： | 硅化作用 热力学 锡矿山 锑矿床 矿化 |
| 收稿时间： | 1996/5/3 0:00:00 |
| 修稿时间： | 1996/5/27 0:00:00 |
THERMAL DYNAMIC STUDY ON FORMING MECHANISM OF SILICIFICHTION-TAKING XIKUANG SHAN ANTIMONY DEPOSIT AS AN EXAMPLE |
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| Xie Qinglin,Ma Dongsheng and Liu Yingjun.THERMAL DYNAMIC STUDY ON FORMING MECHANISM OF SILICIFICHTION-TAKING XIKUANG SHAN ANTIMONY DEPOSIT AS AN EXAMPLE[J].Contributions to Geology and Mineral Resources Research,1996,11(3):1-8. |
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| Authors: | Xie Qinglin Ma Dongsheng and Liu Yingjun |
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| Institution: | State Key laboratory for Research of Mineral Resources, Department of Earth Sciences, Nanjing University, Nanjing 210093;State Key laboratory for Research of Mineral Resources, Department of Earth Sciences, Nanjing University, Nanjing 210093;State Key laboratory for Research of Mineral Resources, Department of Earth Sciences, Nanjing University, Nanjing 210093 |
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| Abstract: | 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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