| 单斜镁星叶石的晶体结构再测定 |
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| 引用本文： | 李国武,马哲生,施倪承. 单斜镁星叶石的晶体结构再测定[J]. 西南科技大学学报, 1997, 0(3) |
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| 作者姓名： | 李国武 马哲生 施倪承 |
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| 作者单位： | 西南工学院，中国地质大学 |
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| 摘 要： | 通过四圆单晶衍射仪收集衍射数据，精确测定了单斜镁星叶石的晶体结构，其Ｒ因子为０．０６１，确定空间群为Ａ２，Ｔｉ的配位数为５，Ｎａ有两种结晶学位置，一种是呈八次配位位于结构层间，另一种是六次配位位于阳离子八面体层中，使单斜镁星叶石成为大阳离子层状硅酸盐。最终晶体化学式为Ｋ２ＮａＮａ（Ｆｅ，Ｍｎ）４Ｍｇ２Ｔｉ２［Ｓｉ４Ｏ１２］２（ＯＨ）４（ＯＨ，Ｆ）２。
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| 关 键 词： | 单斜镁星叶石 晶体结构再测定 |
DETERMINE OF MONOCLINIC ASTROPHYLLITE CRYSTAL STRUCTURE |
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| Li Guowu Ma Zhesheng Shi Nicheng. DETERMINE OF MONOCLINIC ASTROPHYLLITE CRYSTAL STRUCTURE[J]. Journal of Southwest University of Science and Technology, 1997, 0(3) |
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| Authors: | Li Guowu Ma Zhesheng Shi Nicheng |
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| Affiliation: | Li Guowu Ma Zhesheng Shi Nicheng(Southwest Institute of Technology) (China University of Geosciences) |
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| Abstract: | The structure of monoclinic astrophyllite was determined by instensity data were collected on Rigaku PASA IIs four circle diffractometer.The final R=0.061,space group is A2,The determinetion indicated that the coordination typies,their coordination numbers are eight and six,its formula is K 2NaNa(Fe,Mn) 4Mg 2Ti 2[Si 4O 12 ] 2(OH) 4(OH,F) 2,Z=2. |
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| Keywords: | monoclinic astrophyllite crystal structure |
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