| Geochemistry of Trace Elements during Ore-Forming Processes in Yinshan Deposit |
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| 作者姓名： | Ling QicongLaboratory for Study the Earth's Interior and Geofluids Institute of Geochemistry Chinese Academy of Sciences Guiyang Faculty of Earth Sciences China University of Geosciences Wuhan Liu CongqiangInstitute of Geochemistry Chi |
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| 作者单位： | Ling QicongLaboratory for Study the Earth's Interior and Geofluids，Institute of Geochemistry，Chinese Academy of Sciences，Guiyang 550002; Faculty of Earth Sciences，China University of Geosciences，Wuhan 430074Liu CongqiangInstitute of Geochemistry，Chi |
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| 基金项目： | theNationalOutstandingYongScientistFoundation ( 4 96 2 5 30 4)andtheMinistryofScienceandTechnologyofChina ( 95 Pre “Pandeng” 39) . |
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| 摘 要： | ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅＹｉｎｓｈａｎｄｅｐｏｓｉｔｉｎｔｈｅｎｏｒｔｈｅａｓｔｅｒｎＪｉａｎｇｘｉＰｒｏｖｉｎｃｅｏｆＣｈｉｎａｉｓａｌａｒｇｅ ｓｕｐｅｒｌａｒｇｅｐｏｌｙｍｅｔａｌｌｉｃＣｕ Ｚｎ Ｐｂ Ａｇ Ａｕｄｅ ｐｏｓｉｔ.Ｔｈｏｕｇｈｔｈｅｒｅａｒｅｍａｎｙｄｉｆｆｅｒｅｎｔａｒｇｕｍｅｎｔｓａｂｏｕｔｔｈｅｇｅｎｅｓｅｓｏｆｔｈｅｄｅｐｏｓｉｔ(Ｈａｏ ,1998;Ｚｈａｎｇ ,1997;ＪｉａｎｇｘｉＧｅｏ ｌｏｇｉｃＥｘｐｌｏｒａｔｉｏｎＢｕｒｅａｕ ,1996 ;Ｚｈａｎｇ ,1996 ;Ｈｕａ ,1987;Ｙ…
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Geochemistry of Trace Elements during Ore-Forming Processes in Yinshan Deposit |
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| Ling QicongLaboratory for Study the Earth''''s Interior and Geofluids,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang , Faculty of Earth Sciences,China University of Geosciences,Wuhan Liu CongqiangInstitute of Geochemistry,Chi.Geochemistry of Trace Elements during Ore-Forming Processes in Yinshan Deposit[J].Journal of China University of Geosciences,2001,12(3). |
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| Authors: | Ling Qicong Liu Congqiang |
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| Abstract: | Detailed studies on trace elements in ores, walirocks of intrusion and orebodies in Yinshan depositshow that ∑REE increased in all samples except in those close to the intrusion and orebodies. Altered wallrocks with lower w(LREE)/w(HREE) ratios were depleted in Eu, as compared with their fresh counterparts. The calculation results suggest that less than 31% of the increment of REE might have been caused by mass transfer and that the remaining percentage might have been responsible for the addition of REE into the rock from hydrothermal fluid that caused rock alteration. The acting hydrothermai fluid was characterized by low w(LREE)/w(HREE) ratio with a strong positive anomaly. The reductive state of the hydrothermai fluid resulted in the loss of Eu by reducing Eu3+ into more mobile Eu2+. In other trace elements, Hf, Th, U, V, Cr, Co, Nb, Mo, Ta, Zr and Rb show immobility,Y, Sc and Sr were carried off while Cu, Pb, Zn, Ag, Sn and Ba were introduced into altered wallrocks by hydrothermal fluid during hydrothermal alteration.`` |
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| Keywords: | geochemistry of trace elements hydrothermal alteration metamorphic phyllite of Shuangqiaoshan Group Yinshan deposit |
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