| 氟碳钙铈矿的电子衍射研究 |
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| 引用本文： | 杨主明,张建洪.氟碳钙铈矿的电子衍射研究[J].地质科学,1992,0(1):20-25. |
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| 作者姓名： | 杨主明 张建洪 |
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| 作者单位： | 1. 中国科学院地质研究所;2. 中国地质大学, 北京 |
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| 摘 要： | 内蒙古白云鄂博的氟碳钙铈矿,经电子衍射研究,观察到三种多型:4H,P6α=7.12Å c'=56.4Å;6R,R3 α=7.12Å c'=84.6Å; 3R,R3 α=7.12Å c'=42.3Å。其中4H 为新多型。湖北竹山氟碳钙铈矿仅观察到一种多型6R。白云鄂博样品中发现3R 与6R 共晶格取向连生,以及3R 型共格双晶。
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| 关 键 词： | 白云鄂博 竹山 多型 共晶格取向连生 氟碳钙铈矿 |
| 收稿时间： | 1991-02-22 |
| 修稿时间： | 1991-02-22; |
A STUDY ON ELECTRON DIFFACTION OF BASTNAESITE |
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| Yang Zhuming.A STUDY ON ELECTRON DIFFACTION OF BASTNAESITE[J].Chinese Journal of Geology,1992,0(1):20-25. |
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| Authors: | Yang Zhuming |
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| Institution: | 1. Institute of Geology, Academia Sinica, Beijing;2. Chinese University of Geological Science |
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| Abstract: | The study on electron diffraction of bastnaes ite from Bayan Obo,Nei Mongol, permits us to find three politypes of the mineral:4H,P6:a=7.12.,c=56.4; 6R,R3:a=7.12,c=84.6;3R,R3:a=7.12,c=42.3.Among them the 4H is a new politype.For basnaesie from Zhushan,Hubei Province,only a politype 6R was observed,in samples from Bayan Obo an eutectic-oeriented intergrowth of 3R and 6R was found,and the eutectic twin of 3R type was observed. |
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| Keywords: | Bastnaesite Bayan Obo Zhushan Politype Eutectic-oriented intergrowth |
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