| Daughter minerals in fluid inclusions of garnet and diopside from Tongguanshan Copper Deposit by SEM／EDS and LRM |
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| 作者姓名： | YulingXie JiuhuaXu ZengqianHou ZhusenYang WenyiXu YifengMeng BaohuaWang |
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| 作者单位： | [1]InstituteofMineralResources,ChineseAcademyofGeologicalScience,Beijing100037,China [2]CivilandEnvironmentalEngineeringSchool,UniversityofScienceandTechnologyBeijing,Beijing100083,China |
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| 摘 要： | Tongguanshan copper deposit of Tongling large ore belt is one of the typical skarn copper deposits. Based on careful observation under microscope many daughter minerals including transparent ones and opaque ones have been distinguished in the fluid inclusions of garnet and diopside. The results of SEM/EDS (scanning electron microscope/energy dispersive spectrometer) and LRM (laser Raman microprobe) analysis show that these daughter minerals in garnet are sylvite, halite, sphalerite, chalcopyrite and carbonate. Sylvite daughter mineral is very popular in garnet and diopside. The existence of so much sylvite daughter mineral and other daughter minerals in the fluid inclusions indicates that the ore-forming fluid is of supper-high salinity and high potassium concentration. High potassium concentration in the fluid inclusions agrees with K-rich mesotype-acid rock and K-silicate alteration that occurred widely in this area. The daughter mineral assemblage in garnet and diopside is similar to the mineral assemblage of oreforming stage that followed skarn stage.
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| 关 键 词： | 安徽 子矿物 流体包裹体 石榴石 透辉石 铜沉积 SEM／EDS LRM 硅卡岩 富钾流体 |
Daughter minerals in fluid inclusions of garnet and diopside from Tongguanshan Copper Deposit by SEM/EDS and LRM |
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| YulingXie JiuhuaXu ZengqianHou ZhusenYang WenyiXu YifengMeng BaohuaWang.Daughter minerals in fluid inclusions of garnet and diopside from Tongguanshan Copper Deposit by SEM/EDS and LRM[J].Journal of University of Science and Technology Beijing,2004,11(6):481-485. |
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| Authors: | Yuling Xie Jiuhua Xu Zengqian Hou Zhusen Yang Wenyi Xu Yifeng Meng Baohua Wang |
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| Abstract: | Tongguanshan copper deposit of Tongling large ore belt is one of the typical skarn copper deposits. Based on careful observation under microscope many daughter minerals including transparent ones and opaque ones have been distinguished in the fluid inclusions of garnet and diopside. The results of SEM/EDS (scanning electron microscope/energy dispersive spectrometer) and LRM (laser Raman microprobe) analysis show that these daughter minerals in garnet are sylvite, halite, sphalerite, chalcopyrite and carbonate. Sylvite daughter mineral is very popular in garnet and diopside. The existence of so much sylvite daughter mineral and other daughter minerals in the fluid inclusions indicates that the ore-forming fluid is of supper-high salinity and high potassium concentration. High potassium concentration in the fluid inclusions agrees with K-rich mesotype-acid rock and K-silicate alteration that occurred widely in this area. The daughter mineral assemblage in garnet and diopside is similar to the mineral assemblage of oreforming stage that followed skarn stage. |
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| Keywords: | Tongguanshan copper deposits skarn fluid inclusion daughter mineral potassium-rich fluid |
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