| 中低温开放含硫水热体系中水岩淋滤实验研究 |
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| 引用本文：.1998.Water-rock leaching experiments of the open sulfur-bearing hydrothermal systemat medium-low temperature[J].Mineral Deposits,17(2):185~191 |
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| 基金项目:国家自然科学基金（49473186）和教委博士点基金 |
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| 中文摘要:针对湘巾湘西矿区的地质实际许100～300 C、，20 MPa压力条件下，对中低温开放含硫水热体系地层岩石中Sb、As、Hg的多元素进行了淋滤实验研究。实验结果表明，随温度的升高，Sb和Hg的淋滤率增大；低温富硫热液有利于Sb和As的活化迁移。同时，水岩比值、岩性以及岩石中元素的存在形式也是控制元素活化能力的重要因素。 |
| 中文关键词:中低温热液，开放含硫体系，淋滤，湘中湘西 |
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| Water-rock leaching experiments of the open sulfur-bearing hydrothermal systemat medium-low temperature |
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| Abstract:With large quantities of mesothermal-epithermal antimony, arsenic, mercury, gold and lead-zinc deposits, the central and western Hunan is an important base area of polymetallic deposits in China. Based on metallogenic conditions of this area, the authors carried out a series of experiments on leaching Sb, As and Hg from the strata by sulfur-bearing open aqueous fluids under the condition of 100℃~300℃ and 20 MPa. These experiments are of great significance in filling up the gap in the leaching experimentation of open sulfur-bearing hydrothermal system at medium-low temperature and obtaining metallogenic experimental data consistent with the geological reality. The experimental results show that temperature, sulfur concentration and water-rock ratio directly affect the leaching rate of elements, that the leaching rates of Sb and Hg rise with the temperature, and that the low-temperature sulfur-rich hydrothermal soluation is favorable for the mobilization and migration of Sb and As. The lithologic character and modes of occurrence of elements in rocks arc also important factors affecting the leaching rate, |
| keywords:mesothermal-epithermal .solution , open sulfur-bearing system , leaching , central and western Hunan |
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