Geochemical Characteristics of Rare Earth Elements of Guidong Granitic Complex and Relationship with Uranium Mineralization
来源期刊：JOURNAL OF RARE EARTHS2007年增刊第1期
论文作者：Hua Renmin Deng Ping Wu Lieqin Liu Xiaodong
Key words：Guidong granitic complex; fluid-rock interaction; tetrad effects; uranium mineralization; Maofeng intrusion; Rare earths;
Abstract: Guidong granitic complex is constituted by Luxi intrusion, Xiazhuang intrusion, Maofeng intrusion, Sundong intrusion, Aizi intrusion and Siqian intrusion, which emplaced in Indosinian and early Yanshanian Periods. These intrusions varied from each other not only in major element content, aluminium saturation index, but also in values of ΣREE, δEu, and LREE/HREE, (La/Yb)N, (La/Sm)N and (Gd/Yb)N. The Maofeng intrusion, which has the closest relationship with uranium mineralization, belongs to strong peraluminous granites. Having undergone much intense fluid-rock interaction, it is characterized by typical M-type tetrad effects and lowest values of ΣREE, δEu, LREE/HREE, (La/Yb)N, (La/Sm)N and (Gd/Yb)N ratios than other studied intrusions.
Hua Renmin1，Zhang Zhanshi2，Deng Ping3，Wu Lieqin3，Liu Xiaodong2
(1.State Key Laboratory for Mineral Deposit Research, Nanjing University, Nanjing 210093, China;
2.Key Laboratory of Nuclear Resources and Environment East China Institute of Technology, Ministry of Education, Nanchang 330013, China;
3.No.290 Research Institute, China National Nuclear Corporation, Shaoguan 512026, China)
Abstract:Guidong granitic complex is constituted by Luxi intrusion, Xiazhuang intrusion, Maofeng intrusion, Sundong intrusion, Aizi intrusion and Siqian intrusion, which emplaced in Indosinian and early Yanshanian Periods. These intrusions varied from each other not only in major element content, aluminium saturation index, but also in values of ΣREE, δEu, and LREE/HREE, (La/Yb)N, (La/Sm)N and (Gd/Yb)N. The Maofeng intrusion, which has the closest relationship with uranium mineralization, belongs to strong peraluminous granites. Having undergone much intense fluid-rock interaction, it is characterized by typical M-type tetrad effects and lowest values of ΣREE, δEu, LREE/HREE, (La/Yb)N, (La/Sm)N and (Gd/Yb)N ratios than other studied intrusions.
Key words:Guidong granitic complex; fluid-rock interaction; tetrad effects; uranium mineralization; Maofeng intrusion; Rare earths;
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