| 阜新萤石成矿区稀土元素地球化学特征及指示意义 |
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| 引用本文： | 杨子荣,刘敬党,孙祥,王文武,徐大地,王永春.阜新萤石成矿区稀土元素地球化学特征及指示意义[J].现代地质,2008,22(5). |
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| 作者姓名： | 杨子荣 刘敬党 孙祥 王文武 徐大地 王永春 |
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| 作者单位： | 1. 辽宁工程技术大学,资源与环境工程学院,辽宁,阜新,123000
2. 辽宁省化工地质勘查院,辽宁,锦州,121000 |
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| 基金项目： | 辽宁省科技规划项目，辽宁工程技术大学校科研和教改项目 |
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| 摘 要： | 为了研究阜新萤石成矿机制,对其稀土元素地球化学特征进行了分析。阜新地区萤石矿赋存于早二叠世、晚三叠世和晚侏罗世花岗岩中。地球化学分析结果显示,所有萤石均具有弱的Ce负异常,其稀土配分模式存在3种类型:Eu明显亏损型、Eu弱亏损型和Eu富集型。萤石中稀土元素的含量并不随围岩中的稀土元素含量的增加而增加,晚期侵入的花岗岩富集轻稀土元素。从成矿早期到成矿晚期,萤石的稀土元素配分型式从Eu明显亏损型向富集型演化,稀土元素总量逐渐降低。赋存于早二叠世和晚三叠世花岗岩中萤石矿流体包裹体中SO42-含量及液相成分还原参数指标指示,成矿流体由还原条件向氧化条件转变,成矿物质主要来源于赋矿花岗岩。
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| 关 键 词： | 稀土元素 地球化学 成矿流体 萤石矿床 阜新 |
REE Geochemical Characteristics of Fluorite in Fuxin Metallogenic Region and Its Geological Implications |
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| YANG Zi-rong,LIU Jing-dang,SUN Xiang,WANG Wen-wu,XU Da-di,WANG Yong-chun.REE Geochemical Characteristics of Fluorite in Fuxin Metallogenic Region and Its Geological Implications[J].Geoscience——Journal of Graduate School,China University of Geosciences,2008,22(5). |
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| Authors: | YANG Zi-rong LIU Jing-dang SUN Xiang WANG Wen-wu XU Da-di WANG Yong-chun |
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| Abstract: | In order to research the metallogenic characteristics of the Fuxin fluorite ore area,the paper discusses the REE geochemical characteristics.The results show that fluorites occur in Early Permian,Late Triassic and Late Jurassic granite with negative Ce anomaly and three types of the REE distribution patterns such as negative,normal and positive Eu anomaly for fluorite.The content of REE in fluorite does not increase with the fluorite content in the country rocks.The granite which interuded in late period is rich in light REE.Total REE content decreases gradually and the REE distribution pattern evolves from depleted Eu to enriched Eu from the early period to the late period.The content of SO2-4 in the mineral fluid inclusions and the liquid composition reduction parameter existing in Early Permian and Late Triassic indicate that ore-forming fluid has evolved from deoxidized condition to oxidized condition.The ore-forming material sources originate from the granite. |
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| Keywords: | REE geochemistry ore-forming fluid fluorite deposit Fuxin |
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