| 四川牦牛坪稀土矿床萤石Sr、Nd同位素对地幔成矿流体的指示意义 |
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| 引用本文： | 许成,黄智龙,等.四川牦牛坪稀土矿床萤石Sr、Nd同位素对地幔成矿流体的指示意义[J].地球科学,2003,28(1):41-46. |
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| 作者姓名： | 许成 黄智龙 |
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| 作者单位： | [1]中国科学院研究生院，北京100039 [2]中国科学院地球化学研究所矿床地球化学开放研究实验室，贵州贵阳550002 |
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| 基金项目： | 国家攀登计划预选项目资助 (No .95 -预 -3 9) |
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| 摘 要： | 萤石是四川牦牛坪稀土矿床主要的脉石矿物之一，其形成贯穿了整个稀土成矿过程，因此同位素的研究对探讨萤石和稀土成矿流体的来源具有重要的价值。矿区6件萤石样品的Sr、Nd同位素组成没有明显差异，结合围岩（碳酸岩－正长岩，花岗岩）同位素组成特征研究表明，不同颜色、来自不同矿石类型、具有不同REE类型的萤石为同源产物，稀土成矿流体来源于富集地幔，与区内碳酸岩－正长岩岩浆活动密切相关。
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| 关 键 词： | 四川 地幔 成矿流体 萤石 碳酸岩－正长岩 稀土矿床 锶同位素 钕同位素 岩浆活动 |
| 文章编号： | 1000-2383(2003)01-0041-06 |
Indicator of Fluorite Sr and Nd Isotope to Mantle-Derived Ore-Forming Fluids in Maoniuping REE Deposit, Sichuan Province, China |
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| XU Cheng ,HUANG Zhi long ,LIU Cong qiang ,QI Liang ,LI Wen bo ,GUAN Tao.Indicator of Fluorite Sr and Nd Isotope to Mantle-Derived Ore-Forming Fluids in Maoniuping REE Deposit, Sichuan Province, China[J].Earth Science-Journal of China University of Geosciences,2003,28(1):41-46. |
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| Authors: | XU Cheng HUANG Zhi long LIU Cong qiang QI Liang LI Wen bo GUAN Tao |
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| Institution: | XU Cheng 1,2,HUANG Zhi long 1,LIU Cong qiang 1,QI Liang 1,LI Wen bo 1,GUAN Tao 1 |
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| Abstract: | Fluorite is main vein mineral in Maoniuping REE deposit, whose formation ran through the whole mineralization process. So the isotopic study plays an important role in probing the source of fluorite and REE ore-forming fluid. The Sr, Nd isotopic composition of 6 fluorite samples from Maoniuping orefield are similar. According to Sr, Nd isotopic data of the wall rocks ( carbonatite syenite, granite), it is shown: that different REE distribution fluorites from different colors and ore type are the products of the same source; REE ore forming fluids come from the enriched mantle and are closely related with magma action of carbonatite syenite. |
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| Keywords: | fluorites Sr Nd isotope carbonatite syenite Maoniuping REE deposit |
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