Scheelite and coexisting F-rich zoned garnet, vesuvianite, fluorite, and apatite in calc-silicate rocks from the Mogok metamorphic belt, Myanmar: Implications for metasomatism in marble and the role of halogens in W mobilization and mineralization
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- 作者：Shun Guoa ; b ; guoshun@mail.iggcas.ac.cn" class="auth_mail" title="E-mail the corresponding author ; Yi Chena ; b ; Chuan-Zhou Liua ; b ; Jian-Gang Wanga ; Bin Sua ; Yi-Jie Gaoa ; Fu-Yuan Wua ; b ; Kyaing Seinc ; Yue-Heng Yanga ; Qian Maoa
- 关键词：Scheelite ; F-bearing garnet ; Calc-silicate rock ; Metasomatism ; Tungsten ; Mogok metamorphic belt
- 刊名：Journal of Asian Earth Sciences
- 出版年：2016
- 出版时间：1 March 2016
- 年：2016
- 卷：117
- 期：Complete
- 页码：82-106
- 全文大小：7607 K
文摘
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The MMB calc-silicate rock was formed by metasomatisms of marble via input of an external Si–Al–Fe–W–F-bearing fluid.
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Compositional zonations of F-bearing garnet record a two-stage metasomatism.
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The metasomatic fluid responsible for scheelite formation has high aF−, fo2, and HREE contents.
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The MMB scheelite has a LREE-rich pattern with a high LaN/YbN ratio, a high Mo content, and a negative Eu anomaly.
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F rather than Cl dominates the mobilization and transfer of W and mineralization of scheelite in the MMB.