| Fluid-melt Inclusions in Fluorite of the Huanggangliang Skarn Iron-Tin Deposit and Their Significance to Mineralization |
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| 作者姓名： | WANG Lijuan WANG Jingbin WANG Yuwang and MAO QianInstitute of Geology and Geophysics Chinese Academy of Sciences A- Datun Ro Beijing Beijing Institute of Geology for Mineral Resources Beijing |
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| 作者单位： | WANG Lijuan，WANG Jingbin，WANG Yuwang and MAO QianInstitute of Geology and Geophysics，Chinese Academy of Sciences，A-11 Datun Road，Beijing 100101Beijing Institute of Geology for Mineral Resources，Beijing 100012 |
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| 摘 要： | For the first time, fluid-melt inclusions are found in fluorite of the Huanggangliang skarn iron-tin deposit (HSID). The fluorite was formed in the main stage of mineralization, named the hydro-skarnization stage. The inclusions contain various components such as Fe, Mg and Cr from deep sources. The melts of primary inclusions are mainly Ca- and F-rich and those of secondary inclusions tend to become Si-rich. During this evolution process, the melts and iron daughter minerals decreased and even vanished. These facts reveal that the evolution of the primary mineralizing fluids and the differentiation of the fluids and melts are the main factors leading to the deposition of Fe, Sn and other elements. This discovery confirms the magmatic genesis of the HSID and has filled in the gaps in the research of magmatogenic skarn deposits and furnished new methods for such research. Furthermore, it has enlarged the scope of the research on fluid inclusions.
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Fluid-melt Inclusions in Fluorite of the Huanggangliang Skarn Iron-Tin Deposit and Their Significance to Mineralization |
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| Authors: | WANG Lijuan WANG Jingbin WANG Yuwang and MAO QianInstitute of Geology and Geophysics Chinese Academy of Sciences A- Datun Roa Beijing Beijing Institute of Geology for Mineral Resources Beijing |
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| Abstract: | For the first time, fluid-melt inclusions are found in fluorite of the Huanggangliang skarn iron-tin deposit (HSID). The fluorite was formed in the main stage of mineralization, named the hydro-skarnization stage. The inclusions contain various components such as Fe, Mg and Cr from deep sources. The melts of primary inclusions are mainly Ca- and F-rich and those of secondary inclusions tend to become Si-rich. During this evolution process, the melts and iron daughter minerals decreased and even vanished. These facts reveal that the evolution of the primary mineralizing fluids and the differentiation of the fluids and melts are the main factors leading to the deposition of Fe, Sn and other elements. This discovery confirms the magmatic genesis of the HSID and has filled in the gaps in the research of magmatogenic skarn deposits and furnished new methods for such research. Furthermore, it has enlarged the scope of the research on fluid inclusions. |
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| Keywords: | skarn deposit fluorite fluid-melt inclusion daughter mineral melt composition |
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