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- Title
LA-ICPMS 与EPMA 结合测定铀矿物微区原位U-Pb 年龄.
- Authors
叶丽娟; 肖志斌; 涂家润; 耿建珍; 张 健; 许雅雯; 郭 虎; 崔玉荣; 张永清
- Abstract
The U-Pb isotopic dating in situ microanalysis of high uranium minerals has a very important significance in research work. This project combines EPMA and LA-ICPMS. Researchers will obtain accurate U-Pb isotopic age in situ microanalysis of high uranium minerals. Researchers will strive to establish a feasible new method in situ microanalysis on high uranium minerals, and thus greatly improve the precision. It is hard to find the standard sample of uranium in LA-ICPMS, but the ratio of 206Pb, 207Pb and 208Pb can be obtained directly. U and Pb content can be obtained by EPMA method. Then the isotope age can be yielded precisely. Researchers will solve the problem of LA-ICPMS standard sample and the EPMA defect of failing to deduce ordinary lead. Therefore the mineralization ages of some uranium deposits can be obtained by directly analyzing the high uranium minerals. The important applications and broad prospects of this new approach can be used not only in the study of uranium deposits dating but also in other geological bodies with high uranium.
- Publication
Acta Geoscientica Sinica, 2019, Vol 40, Issue 3, p479
- ISSN
1006-3021
- Publication type
Article
- DOI
10.3975/cagsb.2018.091701