Cassiterite U-Pb dating and micro-XRF analysis constraint on the formation of Xinlu Sn-Zn deposit, South China
This study presents rock slab and thin section reflection mapping, element mapping by Micro-XRF (μ-XRF) analysis, and in situ cassiterite U-Pb laser ablation-inductively coupled plasma mass spectrometer (LA-ICP-MS) ages of the Xinlu Sn-Zn deposit, Nanling Sn-W belt, South China. The new results prov...
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Frontiers Media S.A.
2023-01-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2022.1031681/full |
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| author | Chang-Hao Xiao Chang-Hao Xiao Ping-Ping Yu Ping-Ping Yu Xiao-Hu Liu Xiang-Chong Liu Xiang-Chong Liu Yan-Wen Tang Wen-Lei Wang Wen-Lei Wang Yu Zhang |
| author_facet | Chang-Hao Xiao Chang-Hao Xiao Ping-Ping Yu Ping-Ping Yu Xiao-Hu Liu Xiang-Chong Liu Xiang-Chong Liu Yan-Wen Tang Wen-Lei Wang Wen-Lei Wang Yu Zhang |
| author_sort | Chang-Hao Xiao |
| collection | DOAJ |
| description | This study presents rock slab and thin section reflection mapping, element mapping by Micro-XRF (μ-XRF) analysis, and in situ cassiterite U-Pb laser ablation-inductively coupled plasma mass spectrometer (LA-ICP-MS) ages of the Xinlu Sn-Zn deposit, Nanling Sn-W belt, South China. The new results provided constraints on the age and processes of Sn mineralization and thus further discussed the role of the Paleo-Pacific plate in the formation of Sn-W mineralization in the Nanling Sn-W belt. Based on mineralogy and μ-XRF analysis, four mineralization episodes are distinguished in the Baimianshan segment, Xinlu deposit, including 1) prograde skarn stage characterized by the mineral assemblages of garnet, pyroxene, marble, hornfels; 2) retrograde skarn-sulfide composed of massive pyrrhotite, sphalerite with parts of epidote, cassiterite; 3) quartz sulfide vein stage consisting of arsenopyrite, pyrite, quartz, and 4) barren calcite crosscutting the former episodes. The time of retrograde skarn-sulfide mineralization is dated by LA-ICP-MS cassiterite U-Pb at 168.7 ± 1.3 Ma. These U-Pb ages, combined with previous geochronological studies, support one Sn mineralization event associated with the 159.5–168.7 Ma magmatism in the Guposhan-Huashan district. The Xinlu Sn-Zn mineralization and the Middle-Late Jurassic Sn-W mineralization in the Nanling belt, South China is genetically related to asthenospheric upwelling and crust-mantle interaction caused by the subduction of the Paleo-Pacific plate. Our results demonstrate that thin section reflection and μ-XRF element mapping are powerful tools for determining paragenesis in ore deposits and are highly effective to guide the selection of analytical positions for cassiterite U-Pb dating. This method may also be applicable to in-situ geochronology of other minerals. |
| first_indexed | 2024-04-11T00:11:05Z |
| format | Article |
| id | doaj.art-7d640ffb02cb42aaba1b7de2e71ecec7 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-04-11T00:11:05Z |
| publishDate | 2023-01-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Earth Science |
| spelling | doaj.art-7d640ffb02cb42aaba1b7de2e71ecec72023-01-09T07:38:41ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632023-01-011010.3389/feart.2022.10316811031681Cassiterite U-Pb dating and micro-XRF analysis constraint on the formation of Xinlu Sn-Zn deposit, South ChinaChang-Hao Xiao0Chang-Hao Xiao1Ping-Ping Yu2Ping-Ping Yu3Xiao-Hu Liu4Xiang-Chong Liu5Xiang-Chong Liu6Yan-Wen Tang7Wen-Lei Wang8Wen-Lei Wang9Yu Zhang10Laboratory of Dynamic Diagenesis and Metallogenesis, Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, ChinaKey Laboratory of Paleomagnetism and Tectonic Reconstruction, Ministry of Natural Resources, Beijing, ChinaLaboratory of Dynamic Diagenesis and Metallogenesis, Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, ChinaKey Laboratory of Paleomagnetism and Tectonic Reconstruction, Ministry of Natural Resources, Beijing, ChinaCollege of Earth Sciences, Guilin University of Technology, Guilin, ChinaLaboratory of Dynamic Diagenesis and Metallogenesis, Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, ChinaKey Laboratory of Paleomagnetism and Tectonic Reconstruction, Ministry of Natural Resources, Beijing, ChinaStake Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, ChinaLaboratory of Dynamic Diagenesis and Metallogenesis, Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, ChinaKey Laboratory of Paleomagnetism and Tectonic Reconstruction, Ministry of Natural Resources, Beijing, ChinaSchool of Earth Sciences and Resources, China University of Geosciences, Beijing, ChinaThis study presents rock slab and thin section reflection mapping, element mapping by Micro-XRF (μ-XRF) analysis, and in situ cassiterite U-Pb laser ablation-inductively coupled plasma mass spectrometer (LA-ICP-MS) ages of the Xinlu Sn-Zn deposit, Nanling Sn-W belt, South China. The new results provided constraints on the age and processes of Sn mineralization and thus further discussed the role of the Paleo-Pacific plate in the formation of Sn-W mineralization in the Nanling Sn-W belt. Based on mineralogy and μ-XRF analysis, four mineralization episodes are distinguished in the Baimianshan segment, Xinlu deposit, including 1) prograde skarn stage characterized by the mineral assemblages of garnet, pyroxene, marble, hornfels; 2) retrograde skarn-sulfide composed of massive pyrrhotite, sphalerite with parts of epidote, cassiterite; 3) quartz sulfide vein stage consisting of arsenopyrite, pyrite, quartz, and 4) barren calcite crosscutting the former episodes. The time of retrograde skarn-sulfide mineralization is dated by LA-ICP-MS cassiterite U-Pb at 168.7 ± 1.3 Ma. These U-Pb ages, combined with previous geochronological studies, support one Sn mineralization event associated with the 159.5–168.7 Ma magmatism in the Guposhan-Huashan district. The Xinlu Sn-Zn mineralization and the Middle-Late Jurassic Sn-W mineralization in the Nanling belt, South China is genetically related to asthenospheric upwelling and crust-mantle interaction caused by the subduction of the Paleo-Pacific plate. Our results demonstrate that thin section reflection and μ-XRF element mapping are powerful tools for determining paragenesis in ore deposits and are highly effective to guide the selection of analytical positions for cassiterite U-Pb dating. This method may also be applicable to in-situ geochronology of other minerals.https://www.frontiersin.org/articles/10.3389/feart.2022.1031681/fullmicro-XRFXinlu depositNanling Sn-W beltSouth ChinaPaleo-Pacificcassiterite U-Pb geochronology |
| spellingShingle | Chang-Hao Xiao Chang-Hao Xiao Ping-Ping Yu Ping-Ping Yu Xiao-Hu Liu Xiang-Chong Liu Xiang-Chong Liu Yan-Wen Tang Wen-Lei Wang Wen-Lei Wang Yu Zhang Cassiterite U-Pb dating and micro-XRF analysis constraint on the formation of Xinlu Sn-Zn deposit, South China Frontiers in Earth Science micro-XRF Xinlu deposit Nanling Sn-W belt South China Paleo-Pacific cassiterite U-Pb geochronology |
| title | Cassiterite U-Pb dating and micro-XRF analysis constraint on the formation of Xinlu Sn-Zn deposit, South China |
| title_full | Cassiterite U-Pb dating and micro-XRF analysis constraint on the formation of Xinlu Sn-Zn deposit, South China |
| title_fullStr | Cassiterite U-Pb dating and micro-XRF analysis constraint on the formation of Xinlu Sn-Zn deposit, South China |
| title_full_unstemmed | Cassiterite U-Pb dating and micro-XRF analysis constraint on the formation of Xinlu Sn-Zn deposit, South China |
| title_short | Cassiterite U-Pb dating and micro-XRF analysis constraint on the formation of Xinlu Sn-Zn deposit, South China |
| title_sort | cassiterite u pb dating and micro xrf analysis constraint on the formation of xinlu sn zn deposit south china |
| topic | micro-XRF Xinlu deposit Nanling Sn-W belt South China Paleo-Pacific cassiterite U-Pb geochronology |
| url | https://www.frontiersin.org/articles/10.3389/feart.2022.1031681/full |
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