| Distribution Characteristics of Gold and Other Trace Elements in the Proterozoic Lengjiaxi Group,Northeastern Hunan Province |
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| 作者姓名： | 刘英俊 季峰峰 |
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| 作者单位： | DepartmentofEarthSciences,NanjingUniversity,Nanjing210008 |
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| 摘 要： | Systematic geochemical studies of the Proterozoic Lengjiaxi Group in northeastern Hunan Province suggest that the Lengjiaxi Group is a Au-As-Sb-W association-type Au-bearing turbidite formation.The contents of Au,As,Sb,W,Cr,Mn,Pb and Zn in the turbidite formation are more than two times as high as the average contents of trace elements in the upper continental crust.The low abundance of Ag and the close correlation between Au and As are two important characteristic features.In the Au-bearing turbidite formation the enrichment of gold is due to the extensive occurrence of Au-bearing pyrites.Higher contents of Au,W,Sb and Ag in the greywacke indicate that they also exist in the form of heavy minerals.Au,Ag,As,Sb,W and REE in the Au-bearing turbidite formation have a close genetic relation with the chemistry of the gold deposits.
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| 关 键 词： | 金矿床 分布 示踪元素 湖南 原生代 成矿作用 稀土元素 银 |
Distribution characteristics of gold and other trace elements in the Proterozoic Lengjiaxi Group,northeastern Hunan Province |
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| Yingjun Liu,Junfeng Ji,Weidong Cui,Chengyuan Sun.Distribution Characteristics of Gold and Other Trace Elements in the Proterozoic Lengjiaxi Group,Northeastern Hunan Province[J].Chinese Journal of Geochemistry,1992,11(1):13-22. |
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| Authors: | Yingjun Liu Junfeng Ji Weidong Cui Chengyuan Sun |
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| Institution: | (1) Department of Earth Sciences, Nanjing University, 210008 Nanjing |
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| Abstract: | Systematic geochemical studies of the Proterozoic Lengjiaxi Group in northeastern Hunan Province suggest that the Lengjiaxi
Group is a Au-As-Sb-W association-type Au-bearing turbidite formation. The contents of Au, As, Sb, W, Cr, Mn, Pb and Zn in
the turbidite formation are more than two times as high as the average contents of trace elements in the upper continental
crust. The low abundance of Ag and the close correlation between Au and As are two important characteristic features. In the
Au-bearing turbidite formation the enrichment of gold is due to the extensive occurrence of Au-bearing pyrites. Higher contents
of Au, W, Sb and Ag in the graywacke indicate that they also exist in the form of heavy minerals. Au, Ag, As, Sb, W and REE
in the Au-bearing turbidite formation have a close genetic relation with the chemistry of the gold deposits.
This project was financially supported by the National Natural Science Foundation of China. |
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