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Geochemical Characteristics of Rare Earth Elements of guidong granitic complex and Relationship with Uranium Mineralization

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Journal of Rare Earths 2007年第S2期25卷 313-319页

作者：张展适华仁民刘晓东邓平吴烈勤 Key Laboratory of Nuclear Resources and Environment (East China Institute of Technology) Ministry of Education State Key Laboratory for Mineral Deposit Research Nanjing University No.290 Research Institute China National Nuclear Corporation

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 ∑REE, 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 ∑REE, δEu, LREE/HREE, (La/Yb)N, (La/Sm)N and (Gd/Yb)N ratios than other studied intrusions.

关键词： guidong granitic complex fluid-rock interaction tetrad effects uranium mineralization Maofeng intrusion Rare earths

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Geochemical Characteristics of Rare Earth Elements of guidong granitic complex and Their Relationship with Uranium Mineralization

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Journal of Rare Earths 2005年第6期23卷 731-731页

作者： Zhang Zhanshi Hua Renmin Liu Xiaodong Deng Ping Wu Lieqin State Key Laboratory for Mineral Deposit Research Nanjing University Nanjing 210093 China Department of Geosciences and Geomatics East China Institute of Technology Fuzhou 344000 China Research Institute No. 290 Bureau of Geology China National Nuclear CorporationShaoguan .512026 China

The guidong granitic complex is constituted by Luxi pluton, Xiazhuang pluton, Maofeng pluton, Sundong pluton, Aizi pluton and Siqian pluton, which intruded in Indosinian and early Yanshanian Periods. These plutons varies from each other not only in major element content, aluminium saturation index, but also in ∑REE, δEu, and LREE/HREE, （La/Yb）N, （La/Sm） N and （Gd/Yb） N ratios. Uranium mineralization is mainly hosted by strong peraluminous granites, which has undergone intense fluid-rock interaction, and their REE compositions are characterised by M-type tetrad effects and lower ∑REE, δEu value, LREE/HREE, （La/Yb） N, （La/Sm） N and （Gd/Yb） N ratios.

关键词： guidong granitic complex fluid-rock interaction tetrad effects uranium mineralization Maofeng pluton rare earths

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