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In Situ U-Th-Pb Dating of Parisite: Implication for the Age of Mineralization of Colombian Emeralds

文献类型：期刊论文

作者Altenberger, Uwe6; Rojas-Agramonte, Yamirka4,5; Yang, Yueheng3; Fernandez-Lamus, Jimmy2; Hager, Tobias4; Guenter, Christina6; Gonzalez-Pinzon, Alejandra1; Charris-Leal, Felipe1; Artel, Julia6
刊名MINERALS
出版日期2022-10-01
卷号12期号:10页码:14
关键词geochronology U-Th-Pb dating parisite calcite emeralds Muzo Eastern Cordillera Colombia
DOI10.3390/min12101232
英文摘要Parisite-Ce (Ca(Ce,La)(2)(CO3)(3)F-2) is a rare-earth (REE) fluorocarbonate mineral first described from the world-famous emerald mines of the Muzo district, Boyaca Province, Colombia. Four samples of parisite-Ce collected from outcrops near Muzo have been geochemically studied and dated using the in situ laser ablation U-Th-Pb method. Our study shows that the REE abundance of parisite is controlled by the leaching of the wall rocks (black schist). Furthermore, we show that the parisite-Ce crystals formed in textural equilibrium with the emeralds, suggesting a similar time of crystallization. Our analysis demonstrates the capability of parisite as a geochronometer and shows that precise and accurate U-Th-Pb ages can be obtained from parisite after common Pb-207 correction. A higher precision date was obtained with the Th-Pb ratio rather than with the U-Pb ratio because of the relatively higher content of Th than U in the samples. The samples yielded Th-208-Pb-232 ages ranging from similar to 47 to 51 Ma. The new ages are similar to 10 Ma older than previously reported Ar-Ar ages and similar to 10 Ma younger than previously reported Rb/Sr ages. These results will have significant implications for understanding the timing of mineralization and crystallization of emerald deposits in Colombia. Furthermore, this study opens new avenues for dating similar deposits worldwide.
WOS关键词EASTERN CORDILLERA ; EVOLUTION ; DEPOSITS ; SAMPLES ; BASINS
资助项目University of Potsdam grant KoUP-program ; FAPA from Universidad de los Andes ; Natural Science Foundation of China
WOS研究方向Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing
语种英语
WOS记录号WOS:000875418900001
出版者MDPI
资助机构University of Potsdam grant KoUP-program ; University of Potsdam grant KoUP-program ; FAPA from Universidad de los Andes ; FAPA from Universidad de los Andes ; Natural Science Foundation of China ; Natural Science Foundation of China ; University of Potsdam grant KoUP-program ; University of Potsdam grant KoUP-program ; FAPA from Universidad de los Andes ; FAPA from Universidad de los Andes ; Natural Science Foundation of China ; Natural Science Foundation of China ; University of Potsdam grant KoUP-program ; University of Potsdam grant KoUP-program ; FAPA from Universidad de los Andes ; FAPA from Universidad de los Andes ; Natural Science Foundation of China ; Natural Science Foundation of China ; University of Potsdam grant KoUP-program ; University of Potsdam grant KoUP-program ; FAPA from Universidad de los Andes ; FAPA from Universidad de los Andes ; Natural Science Foundation of China ; Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/107765]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Rojas-Agramonte, Yamirka
作者单位1.Nat Colombia Mineral SAS, Bogota, Colombia
2.Univ Nacl Colombia, Dept Geosciencias, Bogota 11001, Colombia
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, 19 Beitucheng Western Rd, Beijing 100029, Peoples R China
4.Johannes Gutenberg Univ Mainz, Inst Geowissensch, JJ Becherweg 21, D-55099 Mainz, Germany
5.Christian Albrechts Univ Kiel, Inst Geowissensch, Ludewig Meyn Str 10, D-24118 Kiel, Germany
6.Univ Potsdam, Inst Geosci, Karl Liebknecht Str 24-25,House 27, D-14476 Potsdam, Germany
推荐引用方式
GB/T 7714		 Altenberger, Uwe,Rojas-Agramonte, Yamirka,Yang, Yueheng,et al. In Situ U-Th-Pb Dating of Parisite: Implication for the Age of Mineralization of Colombian Emeralds[J]. MINERALS,2022,12(10):14.
APA Altenberger, Uwe.,Rojas-Agramonte, Yamirka.,Yang, Yueheng.,Fernandez-Lamus, Jimmy.,Hager, Tobias.,...&Artel, Julia.(2022).In Situ U-Th-Pb Dating of Parisite: Implication for the Age of Mineralization of Colombian Emeralds.MINERALS,12(10),14.
MLA Altenberger, Uwe,et al."In Situ U-Th-Pb Dating of Parisite: Implication for the Age of Mineralization of Colombian Emeralds".MINERALS 12.10(2022):14.

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来源：地质与地球物理研究所

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