昆阳磷矿中稀土元素赋存状态研究
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P595;P618.7

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Modes of occurrence of rare earth elements in Kunyang phosphorite deposit, Yunnan Province
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    摘要:

    对昆阳磷矿中稀土元素的赋存状态进行了系统研究,结果表明矿体中稀土元素总量在50×10-6~250×10-6之间,以轻稀土元素富集、重稀土元素亏损为特征,Y含量在30×10-6~155×10-6之间,稀土元素总量与胶磷矿含量呈正相关关系。重砂矿物查找结果显示,昆阳磷矿中缺乏独立的稀土矿物。物相分析结果表明,稀土元素主要赋存在胶磷矿中,碳酸盐相和硅酸盐相中稀土元素含量极低。LA-ICPMS测试结果表明,胶磷矿单矿物中稀土元素总量在280×10-6~420×10-6之间,而白云石单矿物中的稀土元素总量均低于10×10-6。综合分析结果表明,昆阳磷矿中的稀土元素应主要以类质同像的形式存在于胶磷矿中。

    Abstract:

    The study of modes of occurrence of rare earth elements in the Kunyang phosphorite deposit shows that ∑REE values of the orebody vary between 50×10-6 and 250×10-6, characterized by relatively abundant HREE and less LREE. The content of Y is between 30×10-6 and 155×10-6. The content of ∑REE is positively correlated with the content of collophane. Heavy minerals prospecting results show that there is a lack of independent rare earth minerals in the Kunyang phosphorite deposit. Chemical phase analysis shows that rare earth elements mainly exist in the phosphate, and are extremely low in carbonate and silicate. LA-ICPMS results show that the values of rare earth elements in collophane are in the range of 280×10-6~420×10-6, and those in dolomite is less than 10×10-6. Therefore, the rare earth elements should mainly exist in collophane as a result of isommorphic replacement of Ca.

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梁永忠,苏妤芸,苏秀珠,池荷婷,2018,昆阳磷矿中稀土元素赋存状态研究[J].岩石矿物学杂志,37(6):959~966.

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  • 收稿日期:2018-04-13
  • 最后修改日期:2018-09-08
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  • 在线发布日期: 2018-11-27
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