| REE Tetrad Effects in Rare—metal Granites |
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| 引用本文： | 赵振华 AKIMASAMASUDA 等.REE Tetrad Effects in Rare—metal Granites[J].中国地球化学学报,1993,12(3):206-219. |
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| 作者姓名： | 赵振华 AKIMASAMASUDA |
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| 作者单位： | [1]nstituteofGeochemistry（GuangzhouBranch）,AcademiaSinica,Guangzhou,510640 [2]ChemistryDepartment,Facultyof |
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| 摘 要： | Described in this paper are the characteristics of tetrad effects of REE in rare-metal granites.Based on the analytical data and experimental geochemical data available,it is pointed out that the tetrad effects of REE in the granites are produced in the metal-fluid system.Intense fractional crystallization of granitic melt(containing REE accessary minerals)and its interaction with volatile-rich(F,Cl)fluid are the major factors leading to the tetrad effects of REE.From this,this paper presents a composite genetic model for high-degree fractional crystallization-volatile-rich fluid metasomatism of rare-metal granites.With the model,quantitative calculations have been made.Meanwhile,it is pointed out that the tetrad effects of REE can be used as an important indicator to distinguish mineralized granites from barren ones.
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| 关 键 词： | 花岗岩 稀土元素 氟 氯 成因 |
REE tetrad effects in rare-metal granites |
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| Zhao Zhenhua,Akimasa Masuda,M. B. Shabani.REE tetrad effects in rare-metal granites[J].Chinese Journal of Geochemistry,1993,12(3):206-219. |
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| Authors: | Zhao Zhenhua Akimasa Masuda M B Shabani |
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| Institution: | (1) Institute of Geochemistry (Guangzhou Branch), Academia Sinica, 510640 Guangzhou;(2) Chemistry Department, Faculty of Sciences, Tokyo University, Japan;(3) Present address: Department of Chemistry, The University of Electro-communications, Tokyo, Japan |
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| Abstract: | Described in this papa are the characteristics of tetrad effects of REE in rare-metal granites. Based on the analytical data
and experimental geochemical data available, it is pointed out that the tetrad effects of REE in the granites are produced
in the metal-fluid system. Intense fractional crystallization of granitic melt (containing REE accessary minerals) and its
interaction with volatile-rich (F, Cl) fluid are the major factors leading to the tetrad effects of REE. From this, this paper
presents a composite genetic model for high-degree fractional crystallization — volatile-rich fluid metasomatism of rare-metal
granites. With the model, quantitative calculations have been made. Meanwhile, it is pointed out that the tetrad effects of
REE can be used as an important indicator to distinguish mineralized granites from barren ones. |
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| Keywords: | rare-metal granite REE tetrad effect |
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