| 云南东川铜矿硅质白云岩稀土元素地球化学特征 |
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| 引用本文： | 潘含江,方维萱,郭茂华,杨新雨.云南东川铜矿硅质白云岩稀土元素地球化学特征[J].矿产与地质,2008,22(4):342-346. |
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| 作者姓名： | 潘含江 方维萱 郭茂华 杨新雨 |
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| 作者单位： | 1. 中国地质大学,北京,100083;有色金属矿产地质调查中心北京资源勘查技术中心,北京,100012
2. 有色金属矿产地质调查中心北京资源勘查技术中心,北京,100012 |
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| 基金项目： | 国家科技支撑项目，云南省昆明市东川区东川铜矿接替资源勘查项目 |
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| 摘 要： | 根据东川铜矿钻孔岩芯样品的REE分析数据，表明硅质白云岩向辉绿辉长岩的方向ZREE逐渐富集，辉绿辉长岩的=REE为最高值。白云岩与辉绿辉长岩REE配分模式相似，说明它们的REE来源相同。北美页岩（NAAS）标准化配分模式中，硅质白云岩为Eu正异常（δEu：0．99～1．37），δCe在0．90～0．94之间，REE分布模式与已经报道的现代大洋中脊喷口沉积物相似，表明其在形成过程中受岩浆热液影响。
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| 关 键 词： | 铜矿床 硅质白云岩 稀土元素 地球化学特征 东川 云南 |
Geochemical characteristics of the REE in siliceous dolomite in the Dongchuan Cu deposit,Yunnan |
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| PAN Han-jiang,FANG Wei-xuan,GUO Mao-hua,YANG Xin-yu.Geochemical characteristics of the REE in siliceous dolomite in the Dongchuan Cu deposit,Yunnan[J].Mineral Resources and Geology,2008,22(4):342-346. |
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| Authors: | PAN Han-jiang FANG Wei-xuan GUO Mao-hua YANG Xin-yu |
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| Institution: | PAN Han-jiang,FANG Wei-xuan,GUO Mao-hua,YANG Xin-yu (1. China University of Geosciences, Beijing 100083, China;2. Betting Resources Exploration Technical Center of China Non-ferrous Metals Resource Geological Survey, Beijing 100012, China) |
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| Abstract: | The REE data of the drilling core samples from the Dongchuan Cu deposit have shown that ∑REE is gradually enriched from siliceous dolomite to diabase gabbro which has the highest ∑REE value. The REE distributing pattern is the same between dolomite and diabase gabbro, which indicates their REE come from the same sources. NAAS normalized REE pattern has shown positive Eu anomalies of siliceous dolomite （δEu：0. 99-1.37）, while δCe is in the range of 0. 90-0. 94. The REE partition pattern is similar to the reported sediment of modern ocean middle-ridge spout, which shows that magmatic hydrotherm has influenced forming process of siliceous dolomite. |
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| Keywords: | Cu deposit siliceous dolomite REE geochemical characteristics Dongchuan Yunnan |
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