| 会聚束电子衍射对葡萄石空间群的辅助测定 |
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| 引用本文： | 赵文俞,刘祥文.会聚束电子衍射对葡萄石空间群的辅助测定[J].矿物学报,1998,18(2):185-188,T001. |
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| 作者姓名： | 赵文俞 刘祥文 |
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| 作者单位： | [1]武汉工业大学 [2]中国地质大学 |
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| 基金项目： | 国家自然科学基金!49272091 |
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| 摘 要： | 利用透射电子显微技术测定了湖北大冶铁山矿床中的微米级葡萄石空间群。选区电子衍射几何构图法分析表明，该矿物系斜方晶系，衍射消光符号为Ｐｎ－－晶胞参数为α＝０．４５８，ｂ＝０．５５５和ｃ＝１．８５３ｎｍ。（１００）和（３０１）方向的会聚束电子衍射花样研究表明，其空间群为Ｐｎｃｍ。
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| 关 键 词： | 葡萄石 空间群 会聚束电子衍射 辅助测定 |
AUXILIARY DETERMINATION OF THE SPACE GROUP OF PREHNITE BY CONVERGENT-BEAM ELECTRON DIFFRACTION |
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| Zhao Wenyu ,Sun Zhenya, Ye Xianxian,Liu Xiangwen ,Zhao Wenxia, Chen Jingzhong.AUXILIARY DETERMINATION OF THE SPACE GROUP OF PREHNITE BY CONVERGENT-BEAM ELECTRON DIFFRACTION[J].Acta Mineralogica Sinica,1998,18(2):185-188,T001. |
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| Authors: | Zhao Wenyu Sun Zhenya Ye Xianxian Liu Xiangwen Zhao Wenxia Chen Jingzhong |
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| Abstract: | The space group of micron-sized prehnite from the Tieshan iron mineral deposit, Daye,Hubei Province is determined by transmission electron miroscope. The research results of SelectiveArea Electron Diffraction (SAED)patterns by the geometric composition method show that thecrystal structure of prehnite has an orthorhomic unit cell with a= 0. 458nm,b= 0. 555nm and c=1. 853nm, and that its diffraction extinctional symbol is Pn. The space group (Pncm ) ofprehnite is obtained by studying the Convergent-Beam Electron Diffraction (CBED) pattern alongthe 100] and 301] axes,respectively. |
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| Keywords: | space group prehnite SAED CBED |
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