| 铜陵狮子山矿田金矿床和铜矿床矿石稀土元素地球化学 |
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| 引用本文： | 徐晓春,赵丽丽,谢巧勤,褚平利,房海波,王文俊.铜陵狮子山矿田金矿床和铜矿床矿石稀土元素地球化学[J].高校地质学报,2009,15(1). |
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| 作者姓名： | 徐晓春 赵丽丽 谢巧勤 褚平利 房海波 王文俊 |
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| 作者单位： | 合肥工业大学,资源与环境工程学院,合肥,230009 |
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| 摘 要： | 在全面收集前人有关安徽铜陵狮子山矿田主要矿床矿石和蚀变岩石稀土元素分析结果的基础上,对比研究了矿田内金矿床和铜矿床的稀土元素地球化学特征.研究表明,金矿床和铜矿床矿石和蚀变岩石的稀土元素组成、轻重稀土比值和(La/Yb)N值等特征参数承袭了矿区岩浆岩的特征,显示成矿物质的来源以岩浆来源为主,富集地壳组分,反映在成矿过程中深部热液对已同结岩浆岩的淋滤萃取作用和对沉积围岩的叠加改造作用,成矿作用与岩浆作用密切相关;不同成矿阶段和不同类型矿石或蚀变岩石的REE特征反映REE的来源和演化可能与成矿金属元素的来源及其富集成矿机制相一致.此外,金矿床和铜矿床矿石稀土元素地球化学行为亦显示出明显的差异性,铜矿床矽卡岩阶段矿石比石英硫化物阶段矿石相对低的REE含量,以及部分矽卡岩矿石具有La,Ce明显亏损的富集LREE折线型配分模式,反映铜矿床这部分矽卡岩具有岩浆成因的特征;而金矿床和部分铜矿床中的矽卡岩及矽卡岩型矿石则以热液交代成因为主;金矿床和铜矿床Eu异常特征则反映了其成矿热液流体起源压力的差异及流体性质的阶段性演化.
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| 关 键 词： | 稀土元素地球化学 狮子山矿田 铜矿床 金矿床 安徽铜陵 |
Rare Earth Elements of Ores in Gold Deposits and Copper Depositso f Shizishan Ore-Field,Tongling Region,Anhui Province |
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| XU Xiao-chun,ZHAO Li-li,XIE Qiao-qin,ZHU Ping-li,FANG Hai-bo,WANG Wen-jun.Rare Earth Elements of Ores in Gold Deposits and Copper Depositso f Shizishan Ore-Field,Tongling Region,Anhui Province[J].Geological Journal of China Universities,2009,15(1). |
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| Authors: | XU Xiao-chun ZHAO Li-li XIE Qiao-qin ZHU Ping-li FANG Hai-bo WANG Wen-jun |
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| Institution: | School of Resources and Environment Engineering;Hefei University of Technology;Hefei 230009;China |
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| Abstract: | The REE data of ores,altered rocks and related rocks,and minerals in gold and copper deposits in Shizishan ore-field of Tongling region are collected to compare and discuss the differences of REE geochemical characteristics between gold deposits and copper deposits.The magmatic rocks,ores and related altered rocks in gold and copper deposits have similar chondrite-normalized REE patterns,LREE/HREE and(La/Yb)N values,which displays that the ore-forming elements mainly come from the magmatic rocks,and are ric... |
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| Keywords: | REE geochemistry Shizishan ore-field gold deposits copper deposits Tongling region Anhui |
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