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首页> 外文期刊>Journal of Asian earth sciences >Discovery of the REE minerals and its geological significance in the Quyang bauxite deposit, West Guangxi, China
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Discovery of the REE minerals and its geological significance in the Quyang bauxite deposit, West Guangxi, China

机译：桂西曲阳铝土矿床稀土元素矿物的发现及其地质意义

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摘要

Most of the karstic bauxite deposits in China are enriched in REE, and the REE has commonly been considered to be adsorbed on the surface of clay or diaspore minerals as ion state. However, occurrence of REE minerals in the bauxite deposits has not been reported by far. In the Quyang bauxite deposit from Cuangxi province, we find REE minerals. The minerals are parisite and churchite. Parisite is widely distributed in the ooids and matrix, inducing positive Ce anomaly of the ores; whereas, churchite is rare and occurred in the core of ooid. The compositions of the REE minerals show the Eu anomaly can change gently during the weathering, and the Eu anomaly analyses suggest that the REE in the ores are mostly derived from the underlying carbonates. The parisite is formed in an alkaline condition, while churchite in an acidic situation; the co-existence of the two minerals in the ores suggests the Permian environment for bauxite formation is complex with great change of pH value. Moreover, parisite is inferred to be formed earlier than the churchite.
机译：中国的大多数岩溶铝土矿床都富含稀土元素，人们普遍认为稀土元素以离子态​​的形式吸附在粘土或硬岩矿物的表面上。然而，到目前为止，尚未报道铝土矿矿床中存在REE矿物。在广西曲阳铝土矿床中，我们发现了稀土矿。矿物质是寄生物和教堂石。巴黎铁矿广泛分布在卵石和基质中，引起矿石的正Ce异常。教堂石很少见，并且发生在卵石的核心。 REE矿物的组成表明，风化过程中Eu异常会发生轻微变化，Eu异常分析表明矿石中的REE主要来自下伏的碳酸盐。寄生物是在碱性条件下形成的，而钟乳石是在酸性条件下形成的。矿石中两种矿物的共存表明铝土矿形成的二叠纪环境复杂，pH值变化很大。此外，推断寄生虫比教堂成员早形成。

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  • 来源
    《Journal of Asian earth sciences》 |2010年第6期|p.701-712|共12页
  • 作者

    Qingfei Wang; rnJun Deng; rnXuefei Liu; rnQizuan Zhang; rnSilei Sun; rnChengzhu Jiang; rnFang Zhou;

  • 作者单位

    State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosdences, Beijing 100083, China Key Laboratory of Lithosphere Tectonics and Lithoprobing Technology of Ministry of Education, China University of Geosdences, Beijing 100083, China;

    rnState Key Laboratory of Geological Processes and Mineral Resources, China University of Geosdences, Beijing 100083, China Key Laboratory of Lithosphere Tectonics and Lithoprobing Technology of Ministry of Education, China University of Geosdences, Beijing 100083, China;

    rnState Key Laboratory of Geological Processes and Mineral Resources, China University of Geosdences, Beijing 100083, China Key Laboratory of Lithosphere Tectonics and Lithoprobing Technology of Ministry of Education, China University of Geosdences, Beijing 100083, China;

    rnState Key Laboratory of Geological Processes and Mineral Resources, China University of Geosdences, Beijing 100083, China The Bureau of Geo-exploration Guangxi and Mineral Development, Nanning 530023, China;

    rnState Key Laboratory of Geological Processes and Mineral Resources, China University of Geosdences, Beijing 100083, China Key Laboratory of Lithosphere Tectonics and Lithoprobing Technology of Ministry of Education, China University of Geosdences, Beijing 100083, China;

    rnState Key Laboratory of Geological Processes and Mineral Resources, China University of Geosdences, Beijing 100083, China Key Laboratory of Lithosphere Tectonics and Lithoprobing Technology of Ministry of Education, China University of Geosdences, Beijing 100083, China;

    rnThe Bureau of Geo-exploration Guangxi and Mineral Development, Nanning 530023, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    bauxite; guangxi; ree mineral; parisite; churchite;

    机译：Buuite;Guangi;Ree Minera l;Paritte;Chur Chite;

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