| Rare Earth Elements Geochemistry of Laowan Gold Deposit in Henan Province： Trace to Source of Ore-Forming Materials |
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| 引用本文： | 谢巧勤,徐晓春,李晓萱,陈天虎,陆三明.Rare Earth Elements Geochemistry of Laowan Gold Deposit in Henan Province： Trace to Source of Ore-Forming Materials[J].中国稀土学报(英文版),2006,24(1):115-120. |
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| 作者姓名： | 谢巧勤 徐晓春 李晓萱 陈天虎 陆三明 |
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| 作者单位： | School of Resources and Environmental Engineering Hefei University of Technology Hefei 230009 China，School of Resources and Environmental Engineering Hefei University of Technology Hefei 230009 China，School of Chemical Engineering Hefei University of Technology Hefei 230009 China，School of Resources and Environmental Engineering Hefei University of Technology Hefei 230009 China，School of Resources and Environmental Engineering Hefei University of Technology Hefei 230009 China |
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| 基金项目： | 国家自然科学基金，合肥工业大学校科研和教改项目，Anhui Province High School Young Teacher Research Project |
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| 摘 要： | The compositions of REE in quartz and pyrite from the main stage of the Laowan gold deposit in Henan Province and that in quartz from Laowan granite were determined by inductively coupled plasma-mass-spectrometry (ICP-MS) to trace the source of ore-forming materials. Meanwhile, the REE compositions of the deposit ore, granite and metamorphic wall rock were also considered for comparative studies in detail. The range of ∑REE of quartz and pyrite from the deposit ores is 4.18×10-6～30.91×10-6, the average of ∑REE is 13.39×10-6, and the average of ∑REE of quartz in the Laowan granite is 6.68×10-6. There is no distinct difference of REE parameters between the deposit ore quartz and granite quartz. The quartz in gold deposit has the same REE particular parameters as quartzes from Laowan granite, such as δEu, δCe, (La/Yb)N and (La/Sm)N, partition degree of LREE to HREE, especially, the chondrite-normalized REE patterns, but no similarity to those from metamorphic wall rock, which shows that ore-forming hydrothermal fluid is mainly the fluid coming from the Laowan granite magma, rather than metamorphic fluid. Meanwhile, comparison studies on REE features between minerals from the deposit ores and related geological bodies in the deposit show that REE characteristics of minerals can serve as an indicator of ore-forming fluid properties and sources, while the REE characteristics of the bulk samples (such as deposit ores, granites and wall rocks) can not trace the source of the ore-forming materials exactly.
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| 关 键 词： | 金矿 成矿物质 稀土 元素地球化学 河南 |
| 文章编号： | 1002-0721（2006）01-0115-06 |
| 收稿时间： | 2005-05-20 |
| 修稿时间： | 2005-07-20 |
Rare Earth Elements Geochemistry of Laowan Gold Deposit in Henan Province: Trace to Source of Ore-Forming Materials |
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| Xie Qiaoqin,Xu Xiaochun,Li Xiaoxuan,Chen Tianhu,Lu Sanming.Rare Earth Elements Geochemistry of Laowan Gold Deposit in Henan Province: Trace to Source of Ore-Forming Materials[J].Journal of Rare Earths,2006,24(1):115-120. |
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| Authors: | Xie Qiaoqin Xu Xiaochun Li Xiaoxuan Chen Tianhu Lu Sanming |
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| Affiliation: | 1. MLR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China;2. Centre for Exploration Targeting, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia;1. State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, China Academy of Sciences, Beijing 100029, China;2. College of Earth Science, University of Chinese Academy of Sciences, Beijing 100049, China;3. Australian Research Council Centre of Excellence for Core to Crust Fluid Systems/GEMOC, Department of Earth and Planetary Sciences, Macquarie University, NSW 2019, Australia;1. CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China;2. Center of Excellence in Comparative Planetology, Chinese Academy of Sciences (CAS), Hefei 230026, China;3. Frontiers Science Center for Planetary Exploration and Emerging Technologies, University of Science and Technology of China, Hefei 230026, China;1. State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences (Wuhan), Wuhan 430074, China;2. Faculty of Earth Resources, China University of Geosciences (Wuhan), Wuhan 430074, China;3. Department of Earth Sciences, University of New Brunswick, 2 Bailey Drive, Fredericton, NB E3B 5A3, Canada |
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| Abstract: | The compositions of REE in quartz and pyrite from the main stage of the Laowan gold deposit in Henan Province and that in quartz from Laowan granite were determined by inductively coupled plasma-mass-spectrometry (ICP-MS) to trace the source of ore-forming materials. Meanwhile, the REE compositions of the deposit ore, granite and metamorphic wall rock were also considered for comparative studies in detail. The range of ∑REE of quartz and pyrite from the deposit ores is 4.18 × 10?6 ～ 30.91 × 10?6, the average of ∑REE is 13.39 × 10?6, and the average of ∑REE of quartz in the Laowan granite is 6.68 × 10?6. There is no distinct difference of REE parameters between the deposit ore quartz and granite quartz. The quartz in gold deposit has the same REE particular parameters as quartzes from Laowan granite, such as δEu, δCe, (La/Yb)N and (La/Sm)N, partition degree of LREE to HREE, especially, the chondrite-normalized REE patterns, but no similarity to those from metamorphic wall rock, which shows that ore-forming hydrothermal fluid is mainly the fluid coming from the Laowan granite magma, rather than metamorphic fluid. Meanwhile, comparison studies on REE features between minerals from the deposit ores and related geological bodies in the deposit show that REE characteristics of minerals can serve as an indicator of ore-forming fluid properties and sources, while the REE characteristics of the bulk samples (such as deposit ores, granites and wall rocks) can not trace the source of the ore-forming materials exactly. |
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| Keywords: | Laowan gold deposit REE geochemistry source of the ore-forming material ore-forming fluid rare earths |
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