| 华南花岗岩型铀矿床成矿机理研究进展 |
| |
| 引用本文： | 张国全,胡瑞忠,商朋强,刘雷,杨社锋.华南花岗岩型铀矿床成矿机理研究进展[J].矿物岩石地球化学通报,2007,26(4):399-404. |
| |
| 作者姓名： | 张国全 胡瑞忠 商朋强 刘雷 杨社锋 |
| |
| 作者单位： | 1. 中国科学院,地球化学研究所,矿床地球化学国家重点实验室,贵阳,550002;中国科学院,研究生院,北京,100049
2. 中国科学院,地球化学研究所,矿床地球化学国家重点实验室,贵阳,550002 |
| |
| 基金项目： | 中国科学院知识创新工程重要方向项目(KZCX3-SW-125)，国家杰出青年科学基金资助项目(49925309) |
| |
| 摘 要： | 本文介绍了华南花岗岩型铀矿床地质特征,系统总结了前人对其成矿热液来源、物质来源,铀的迁移沉淀机制、碱交代及花岗岩与成矿的关系等方面的研究成果。指出铀源体中的晶质铀矿及富铀矿物在深部相对还原的环境中被氧化而进入成矿热液中起主要作用的可能是大量幔源F和放射性衰变诱发产生的氧及碱交代溶蚀作用,热液中的大部分U6 主要被S2-和Fe2 等还原剂在浅部相对氧化的环境中还原成矿;给出了一种较简易的物质来源定量方法和铀成矿模式。
|
| 关 键 词： | 成矿热液 铀成矿机制 花岗岩型铀矿床 华南 |
| 文章编号： | 1007-2802（2007）04-0399-06 |
| 收稿时间： | 2006-05-30 |
| 修稿时间： | 2007-06-26 |
An Overview on the Ore-forming Mechanism of the Granite-type Uranium Deposit in South China |
| |
| ZHANG Guo-quan,HU Rui-zhong,SHANG Peng-qiang,LIU Lei,YANG She-feng.An Overview on the Ore-forming Mechanism of the Granite-type Uranium Deposit in South China[J].Bulletin of Mineralogy Petrology and Geochemistry,2007,26(4):399-404. |
| |
| Authors: | ZHANG Guo-quan HU Rui-zhong SHANG Peng-qiang LIU Lei YANG She-feng |
| |
| Abstract: | This paper has introduced the geological characteristics of the granite-type uranium deposits in South China,systematically summarized previous research achievements on the sources of ore-forming hydrothermal fluids and materials,the mechanism of uranium migration and deposition,the relationship between the uranium mineralization and the alkali metasomatism or granites.It is suggested that a large amount of mantle-derived fluorine,and the oxygen and alkali metasomatism deduced by the radioactive disintegration might played key roles for oxidizing uraninite and uranium-rich minerals in the uranium source body and transferring uranium into the ore-forming hydrothermal fluids at depth under relatively reduced environment.On the other hand,the hexavalent uranium in the hydrothermal fluids should be mainly reduced by S2-and Fe2 and deposited at shallow depth under relatively oxidizing conditions.This paper has given a relatively simple method for quantifying the source of materials and has proposed a relatively reasonable model for the metallogenesis of uranium deposits. |
| |
| Keywords: | ore-forming hydrothermal fluids and mechanism of uranium granite-type uranium deposits South China |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
