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| 北祁连山变质杂岩中榍石的结构演化及稳定性研究 | |
| 引用本文： | 崔春龙,卢喜瑞,张东,康厚军,周玉林,刘岁海. 北祁连山变质杂岩中榍石的结构演化及稳定性研究[J]. 西南科技大学学报, 2008, 23(4) |
| 作者姓名： | 崔春龙 卢喜瑞 张东 康厚军 周玉林 刘岁海 |
| 作者单位： | 1. 核废物与环境安全国防重点学科实验室,四川绵阳,621000 2. 中国工程物理研究院核物理与化学研究所,四川绵阳,621000 3. 西南科技大学环境与资源学院,四川绵阳,621010 |
| 基金项目： | 国家自然科学基金，西南科技大学核废物与环境安全国防重点学科实验室资助项目 |
| 摘 要： | 作为固化放射性元素的备选矿物榍石赋存于结晶岩中，其稳定性对于核废物固化体的安全性评估意义重大。在利用XRD和EDS等手段对北祁连山变质杂岩体中的副矿物榍石的研究中发现，榍石含有3．46％的锶和铯、0．80％的铀以及其它杂质元素，虽经历了约775Ma的地质演化和所含放射性元素的衰变作用，但晶体形态保存完好，晶体结构几乎没有变化，晶胞参数仅发生了极小的变化，△a=-0．0009nm、△b=0．0018nm、△c=0．0002nm、△β=-0．10°，结晶度仍高达99．27％，表明其稳定性满足百万年尺度的安全性要求。 |
| 关 键 词： | 榍石 晶体结构 地质演化 稳定性 北祁连山 |
Research on the Structural Evolvement and Stability of Sphenes from Metamorphic Rock in the North Qilian Mountain |
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| CUI Chun-long,LU Xi-rui,ZHANG Dong,KANG Hou-jun,ZHOU Yu-lin,LIU Sui-hai. Research on the Structural Evolvement and Stability of Sphenes from Metamorphic Rock in the North Qilian Mountain[J]. Journal of Southwest University of Science and Technology, 2008, 23(4) | |
| Authors: | CUI Chun-long LU Xi-rui ZHANG Dong KANG Hou-jun ZHOU Yu-lin LIU Sui-hai |
| Affiliation: | CUI Chun-long1,LU Xi-rui1,ZHANG Dong3,KANG Hou-jun3,ZHOU Yu-lin2,LIU Sui-hai2(1.School of Environmental Engineering , Resources,Southwest University of Science , Technology,Mianyang 621010,Sichuan,China,2.School of Material Science , Engineering,3.Institute of Nuclear Physics , Chemistry,China Academy of Engineering Physics,Mianyang 621000,China) |
| Abstract: | Sphenes,as crystalline solid of radioelements,exists in the crystallography,its stability has an important significance for security estimate of the solid including nucleur waste material.They are discovered by the XRD and EDS study of the sphenes from metamorphic rock of the Niuxin hill in the North Qilian mountain area: There are 3.46% strontium and caesium,0.80% uranium and foreign matter in the sphenes;Though the sphenes had undergone about 775 Ma geological evolvement and alpha decay action of its radi... |
| Keywords: | Sphene Crystal structure Geo-evolvement Stability the North Qilian Mountain |
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