| 流体混合作用导致金沉淀机理的实验研究 |
| |
| 引用本文： | 曾键年 范永香. 流体混合作用导致金沉淀机理的实验研究[J]. 地球科学, 2002, 27(1): 41-45 |
| |
| 作者姓名： | 曾键年 范永香 |
| |
| 作者单位： | 1.中国地质大学汉口分校, 湖北武汉 430030 |
| |
| 基金项目： | 教育部高等学校博士学科点基金资助项目 (No .95 49112 )，国土资源部矿产资源量预测及勘查评价开放研究实验室基金项目 |
| |
| 摘 要： | 为了研究流体混合作用导致金沉淀的两种主要机理, 通过简化实验体系、分离影响因素, 分别设计了降温、盐度变化导致金沉淀的模拟实验.研究表明:(1)随温度降低溶液的金溶解度也随之降低, 二者之间呈现一种复杂的函数关系; 在300 ℃左右的温度段, 是金沉淀的一个很有地质意义的温度区间;(2)含金流体盐度的降低, 引起流体中金的配位基浓度降低, 导致金沉淀;(3)岩石中发生碱交代有利于金定位富集
|
| 关 键 词： | 流体混合作用 金沉淀机理 模拟实验 |
| 文章编号： | 1000-2383(2002)01-0041-05 |
| 收稿时间： | 2001-06-27 |
Experiments of Mechanisms of Gold Precipitated by Fluid-Mixing Function |
| |
| Zeng Jiannian ,Fan Yongxiang. Experiments of Mechanisms of Gold Precipitated by Fluid-Mixing Function[J]. Earth Science-Journal of China University of Geosciences, 2002, 27(1): 41-45 |
| |
| Authors: | Zeng Jiannian Fan Yongxiang |
| |
| Affiliation: | Zeng Jiannian 1,Fan Yongxiang 2 |
| |
| Abstract: | Simulate experiments of gold precipitated by lowering temperature and changing salt-content are designed by simplifying experimental system and separating influential factors in order to study two main mechanisms of gold precipitated by fluid-mixing function. The study shows first of all that the Au content in solution is lower with the falling temperature of solution, with a kind of complex functional relationship between them, and 300 ℃ as the most significant temperature in geology for gold mineralization.Second, lowering the salt content of the Au-fluid reduces the content of complex foundation, and lead to the gold precipitating. Third, the alkalic metasomatism in the rock is beneficial to gold mineralization. |
| |
| Keywords: | fluid mixing function mechanism of gold precipitation simulate experiment. |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《地球科学》浏览原始摘要信息 |
|
点击此处可从《地球科学》下载全文 |
