| 贵州修文小山坝铝土矿中稀土元素地球化学特征 |
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| 引用本文： | 叶霖,程曾涛,潘自平.贵州修文小山坝铝土矿中稀土元素地球化学特征[J].矿物岩石地球化学通报,2007,26(3):228-233. |
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| 作者姓名： | 叶霖 程曾涛 潘自平 |
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| 作者单位： | 1. 中国科学院,地球化学研究所,矿床地球化学国家重点实验室,贵阳,550002;中国科学院,广州地球化学研究所,边缘海实验室,广州,510640
2. 中国科学院,地球化学研究所,矿床地球化学国家重点实验室,贵阳,550002;中国科学院,研究生院,北京,100049 |
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| 基金项目： | 贵州省科技项目(黔科合计[2004]3082号)，矿床地球化学国家重点实验室项目 |
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| 摘 要： | 前人已经积累了大量贵州铝土矿的研究成果,但关于铝土矿与其中稀土元素的关系至今不清。本研究以修文小山坝铝土矿为例,通过ICP-MS分析测试,研究了矿石和围岩的稀土元素组成。结果表明,矿石中稀土配分模式为轻稀土富集向右倾斜型,具明显Eu负异常,与下寒武统娄山关群含泥质白云岩稀土特征参数和配分模式相似,指出该矿床成矿物质来源以下寒武统娄山关群含泥质白云岩为主,在相对氧化环境下经风化作用成矿。矿床中稀土元素主要富集于矿体及其周围,与Al2O3含量具正相关关系。矿石中稀土元素含量大多达到或超过综合利用标准,具有巨大的潜在经济价值。
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| 关 键 词： | 铝土矿 稀土元素 地球化学特征 小山坝 |
| 文章编号： | 1007-2802（2007）03-0228-06 |
| 修稿时间： | 2006-08-21 |
The REE Geochemical Characteristics of the Xiaoshanba Bauxite Deposit, Guizhou |
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| YE Lin,CHENG Zeng-tao,PAN Zi-ping.The REE Geochemical Characteristics of the Xiaoshanba Bauxite Deposit, Guizhou[J].Bulletin of Mineralogy Petrology and Geochemistry,2007,26(3):228-233. |
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| Authors: | YE Lin CHENG Zeng-tao PAN Zi-ping |
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| Institution: | 1. State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry ,Chinese Academy of Sciences, Guiyang 550002, China ; 2. Key Laboratory of Marginal Sea Geology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China ; 3. Graduate School of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | There are plenty bauxite resources in Guizhou Province.Although a large amount of valuable data for the geology of bauxite deposits have been obtained,it is still not understood clearly about the relationship between bauxite ores and their contained rare earth elements(REE).This study has analyzed REE compositions of various types of bauxite ores and wall rocks from the Xiaoshanba bauxite deposit in Xiuwen County by using ICP-MS.The results show that the REE distribution patterns of bauxite ores are characterized with LREE rich and obvious negative Eu anomaly.These characters are similar to that of the argillaceous dolomite from the Lower Cambrian Loushanguan Group.It is believed that the ore-forming materials were mainly sourced from the argillaceous dolomite of the Lower Cambrian Loushanguan Group and the bauxite deposit was formed through weathering of the dolomite in relatively oxidative environment.In addition,the REE is only enriched in the bauxite ore and the red mud nearby,with positive correlation to the Al2O3 contents of samples.The REE contents in bauxite ores are up to or high enough for industrial comprehensive utilization with tremendous economic potential. |
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| Keywords: | bauxite rare earth elements geochemical characteristics Xiaoshanba |
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