| 富铯矿物及其在核废物地质处置上的意义 |
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| 引用本文： | 胡欢,王汝成,张爱铖,徐士进.富铯矿物及其在核废物地质处置上的意义[J].地质学报,2006,80(11):1779-1786. |
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| 作者姓名： | 胡欢 王汝成 张爱铖 徐士进 |
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| 作者单位： | 1. 南京大学地球科学系,内生金属成矿机制国家重点实验室,210093
2. 中国科学院紫金山天文台,南京,210008 |
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| 基金项目： | 国家自然科学基金项目(编号40302010)资助的成果 |
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| 摘 要： | 自然界中最常见的铯矿物主要有铯沸石、富铯的云母类矿物和富铯的绿柱石类矿物,它们产于稀有金属花岗岩和LCT(Lithium-Cesium-Tantalum)型稀有金属伟晶岩脉体的中心部位或围岩接触带附近,形成于初始富含铯和挥发组份、处于稳定构造环境且经过高度演化分异的原始花岗质岩浆.由于天然富铯矿物中铯含量一般可达15%,它们的合成相可作为核废料中放射性元素137Cs的前景载体相,而且富铯矿物各自的化学成分和结构等矿物学特征,对137Cs核废物载体相及相应的深埋藏地质环境的选择和载体相在不同地质环境下的行为预测都有较好的指导意义.
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| 关 键 词： | 富铯矿物 矿物学特征 核废物处置 |
| 修稿时间： | 2006年1月20日 |
Cs-enriched Minerals and Their Significance on Nuclear Waste Disposal |
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| HU Huan ,WANG Rucheng ,ZHANG Aicheng ,XU Shijin Departm ent of Earth Sciences,State Key Laboratory for Mineral Deposit Research,Nanjing University,Nanjing,Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing.Cs-enriched Minerals and Their Significance on Nuclear Waste Disposal[J].Acta Geologica Sinica,2006,80(11):1779-1786. |
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| Authors: | HU Huan~ WANG Rucheng~ ZHANG Aicheng~ XU Shijin~ Departm ent of Earth Sciences State Key Laboratory for Mineral Deposit Research Nanjing University Nanjing Purple Mountain Observatory Chinese Academy of Sciences Nanjing |
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| Institution: | HU Huan~ ,WANG Rucheng~ ,ZHANG Aicheng~ ,XU Shijin~ Departm ent of Earth Sciences,State Key Laboratory for Mineral Deposit Research,Nanjing University,Nanjing,Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing |
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| Abstract: | Pollucite,Cs-analogue of micas and Cs-enriched beryl are the common Cs-enriched minerals in nature. They all occur in the central part or exocontact wall rocks of the rare-element granites and LCT(Lithium-Cesium-Tantalum)-type pegmatites. The presence of Cs-enriched minerals suggests they should crystallize in the primary granitic melts with cesium and volatile in origin which undergo the high to extreme degrees fraction in a stable tectonic environment. Cs concentration in Cs-enriched minerals are above 15%,so their synthetic phases are considered to be the potential containers of radioactive isotope ~ 137 Cs in the nuclear waste,and the mineralogical characteristics of Cs-enriched minerals,such as chemical composition and crystal structure,have a good significance on the selection of the container of ~ 137 Cs in the nuclear waste,the selection of the deep-bury geological environment and the prediction of the synthetic phases' behavior in different geological environment. |
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| Keywords: | Cs-enriched minerals mineralogical characteristic nuclear waster disposal |
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