Monazite U-Pb age, geochemistry, and genesis of ore-bearing granites in the Zhukeng tungsten deposit, southern Jiangxi Province
Objective The composite Zhukeng granite is composed of two-mica granite and muscovite granite and closely related to tungsten and niobium-tantalum deposits in southern Jiangxi Province. Methods Based on systematic lithogeochemical analysis and rock-forming age determination of muscovite granite...
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Institute of Geomechanics, Chinese Academy of Geological Sciences
2025-02-01
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| Series: | Dizhi lixue xuebao |
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| Online Access: | https://journal.geomech.ac.cn//article/doi/10.12090/j.issn.1006-6616.2024083 |
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| author | GAO Yuan WANG Ying WANG Hai XU Zhe ZHANG Yong ZHOU Yu ZHANG Fangrong SUN Chao HE Bin ZHANG Siyuan ZHANG Fushen |
| author_facet | GAO Yuan WANG Ying WANG Hai XU Zhe ZHANG Yong ZHOU Yu ZHANG Fangrong SUN Chao HE Bin ZHANG Siyuan ZHANG Fushen |
| author_sort | GAO Yuan |
| collection | DOAJ |
| description | Objective The composite Zhukeng granite is composed of two-mica granite and muscovite granite and closely related to tungsten and niobium-tantalum deposits in southern Jiangxi Province. Methods Based on systematic lithogeochemical analysis and rock-forming age determination of muscovite granite and two-mica granite from the Zhukeng tungsten deposit, combined with regional studies concerning diagenesis and mineralization, the genesis and tectonic setting of the rock mass are discussed. Result The LA-ICP-MS analysis of monazite from the fine-grained muscovite granite yielded a 206Pb/238U weighted average U-Pb age of 156.7 ± 1.3 Ma. Major elements exhibit high silica contents (SiO2 ranging from 65.54% to 74.95%), high alkalis contents (Na2O+K2O ranging from 8.48% to 12.85%), high aluminum contents (A/CNK ratios ranging from1.10 to 1.22), and low magnesium contents. The total rare earth elements (ΣREE) range from 61.12×10−6 to 173.98×10−6, and there are right-dipping light rare earth enrichment patterns with a weak negative Eu anomalies. The trace elements Rb, Ta, Th, Pb, Nd, and Hf are enriched, while Ba, Nb, Sr, and Ti are depleted, indicating a highly differentiated S-type granite. The LA-ICP-MS analysis of monazite U-Pb from the two-mica granite yielded an 206Pb/238U weighted average age of 159.5 ± 0.5 Ma. Major elements exhibit high silica contents (SiO2 ranging from 75.02% to 77.03%), high alkalis contents (Na2O+K2O ranging from 5.92% to 8.58%), high aluminum contents (A/CNK ranging from 1.14 to 1.65), and low magnesium contents. Total rare earth elements (ΣREE) range from 106.86×10−6 to 124.24×10−6, and there are right-dipping light rare earth enrichment patterns with a significant negative Eu anomalies. The trace elements Rb, Ta, Th, Pb, Nd, and Hf are enriched, while Ba, Nb, Sr, and Ti are depleted, suggesting a highly differentiated S-type granite. Conclusion By combining geochronological and lithogeochemical characteristics, the authors conclude that the Zhukeng tungsten deposit formed during an Upper Jurassic mineralization event caused by large-scale granitic magmatic activity related to subduction. |
| format | Article |
| id | doaj-art-a015afbf728b4dd38843a0f33a4bd231 |
| institution | OA Journals |
| issn | 1006-6616 |
| language | zho |
| publishDate | 2025-02-01 |
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| series | Dizhi lixue xuebao |
| spelling | doaj-art-a015afbf728b4dd38843a0f33a4bd2312025-08-20T02:15:29ZzhoInstitute of Geomechanics, Chinese Academy of Geological SciencesDizhi lixue xuebao1006-66162025-02-0131232533910.12090/j.issn.1006-6616.2024083Monazite U-Pb age, geochemistry, and genesis of ore-bearing granites in the Zhukeng tungsten deposit, southern Jiangxi ProvinceGAO YuanWANG YingWANG HaiXU ZheZHANG Yong0ZHOU YuZHANG FangrongSUN ChaoHE BinZHANG Siyuan1ZHANG FushenState Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, Jiangxi, ChinaState Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, Jiangxi, ChinaObjective The composite Zhukeng granite is composed of two-mica granite and muscovite granite and closely related to tungsten and niobium-tantalum deposits in southern Jiangxi Province. Methods Based on systematic lithogeochemical analysis and rock-forming age determination of muscovite granite and two-mica granite from the Zhukeng tungsten deposit, combined with regional studies concerning diagenesis and mineralization, the genesis and tectonic setting of the rock mass are discussed. Result The LA-ICP-MS analysis of monazite from the fine-grained muscovite granite yielded a 206Pb/238U weighted average U-Pb age of 156.7 ± 1.3 Ma. Major elements exhibit high silica contents (SiO2 ranging from 65.54% to 74.95%), high alkalis contents (Na2O+K2O ranging from 8.48% to 12.85%), high aluminum contents (A/CNK ratios ranging from1.10 to 1.22), and low magnesium contents. The total rare earth elements (ΣREE) range from 61.12×10−6 to 173.98×10−6, and there are right-dipping light rare earth enrichment patterns with a weak negative Eu anomalies. The trace elements Rb, Ta, Th, Pb, Nd, and Hf are enriched, while Ba, Nb, Sr, and Ti are depleted, indicating a highly differentiated S-type granite. The LA-ICP-MS analysis of monazite U-Pb from the two-mica granite yielded an 206Pb/238U weighted average age of 159.5 ± 0.5 Ma. Major elements exhibit high silica contents (SiO2 ranging from 75.02% to 77.03%), high alkalis contents (Na2O+K2O ranging from 5.92% to 8.58%), high aluminum contents (A/CNK ranging from 1.14 to 1.65), and low magnesium contents. Total rare earth elements (ΣREE) range from 106.86×10−6 to 124.24×10−6, and there are right-dipping light rare earth enrichment patterns with a significant negative Eu anomalies. The trace elements Rb, Ta, Th, Pb, Nd, and Hf are enriched, while Ba, Nb, Sr, and Ti are depleted, suggesting a highly differentiated S-type granite. Conclusion By combining geochronological and lithogeochemical characteristics, the authors conclude that the Zhukeng tungsten deposit formed during an Upper Jurassic mineralization event caused by large-scale granitic magmatic activity related to subduction.https://journal.geomech.ac.cn//article/doi/10.12090/j.issn.1006-6616.2024083southern jiangxi provincezhukeng plutongranite type tungsten depositmonazite u-pb datinggeochemistry |
| spellingShingle | GAO Yuan WANG Ying WANG Hai XU Zhe ZHANG Yong ZHOU Yu ZHANG Fangrong SUN Chao HE Bin ZHANG Siyuan ZHANG Fushen Monazite U-Pb age, geochemistry, and genesis of ore-bearing granites in the Zhukeng tungsten deposit, southern Jiangxi Province Dizhi lixue xuebao southern jiangxi province zhukeng pluton granite type tungsten deposit monazite u-pb dating geochemistry |
| title | Monazite U-Pb age, geochemistry, and genesis of ore-bearing granites in the Zhukeng tungsten deposit, southern Jiangxi Province |
| title_full | Monazite U-Pb age, geochemistry, and genesis of ore-bearing granites in the Zhukeng tungsten deposit, southern Jiangxi Province |
| title_fullStr | Monazite U-Pb age, geochemistry, and genesis of ore-bearing granites in the Zhukeng tungsten deposit, southern Jiangxi Province |
| title_full_unstemmed | Monazite U-Pb age, geochemistry, and genesis of ore-bearing granites in the Zhukeng tungsten deposit, southern Jiangxi Province |
| title_short | Monazite U-Pb age, geochemistry, and genesis of ore-bearing granites in the Zhukeng tungsten deposit, southern Jiangxi Province |
| title_sort | monazite u pb age geochemistry and genesis of ore bearing granites in the zhukeng tungsten deposit southern jiangxi province |
| topic | southern jiangxi province zhukeng pluton granite type tungsten deposit monazite u-pb dating geochemistry |
| url | https://journal.geomech.ac.cn//article/doi/10.12090/j.issn.1006-6616.2024083 |
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