| 氟碳铈矿U-Pb定年技术研究 |
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| 关键词:bastnasite ID-TIMS LA-MC-ICP-MS U-Pb REE ore deposits |
| 基金项目:国家自然科学基金面上项目(编号: 41373053); 国家重点基础研究发展计划(973计划)(编号: 2015CB453000); 中国地质调查局地质调查项目(编号: 12120115013501); 国家自然科学基金青年基金(编号: 41503052; 41403045) |
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| A Study of U-Pb Dating Technology of Bastnaesite |
| In order to solve the problem of lack of suitable minerals for U-Pb dating in rare earth elements (REE) ore deposits, the authors chose the common accessory mineral bastnasite as the research object in the paper. With the optimization of the experimental conditions and instrumental parameters, U-Pb dating of bastnaesite SAM was carried out by laser ablation multi-collector inductively coupled plasma mass spectrometry (LA-MC-ICP-MS) and isotope dilution thermal ionization mass spectrometry (ID-TIMS). The U-Pb ages of bastnaesite SAM obtained by LA-MC-ICP-MS and ID-TIMS are (409±18) Ma (N=27, MSWD=4.5) and (407.8±3.3) Ma (N=3, MSWD=0.029), respectively. The consistent U-Pb dating results within error suggest that the proposed methods for in situ LA-MC-ICP-MS and ID-TIMS U-Pb dating of bastnaesite are effective. |
| TU Jia-run,XIAO Zhi-bin,QU Kai,LI Guo-zhan,ZHOU Hong-ying,LI Hui-min,GENG Jian-zhen,CUI Yu-rong,HAO Shuang,LIU Wen-gang.2017.A Study of U-Pb Dating Technology of Bastnaesite[J].Acta Geoscientica Sinica,38(6):945-951. |
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