| Ore-controlled Mechanism and Geochemical Characteristics of Gold-bearing Formation in Northwest Jiangxi Terrain |
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| 作者姓名： | 刘英俊 李扬 邱德同 季峻峰 |
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| 作者单位： | Department of Earth Sciences，Nanjing University，Nanjing 210008，PRC，Department of Earth Sciences，Nanjing University，Nanjing 210008，PRC，Department of Earth Sciences，Nanjing University，Nanjing 210008，PRC，Department of Earth Sciences，Nanjing University，Nanjing 210008，PRC |
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| 基金项目： | Project supported by the National Natural Science Foundation of China. |
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| 摘 要： | Based on the geological and geochemical studies on the Middle Proterozoic Jiuling Group in the Northwest Jiangxi Terrain, it is ascertained that this group is a kind of Au-bearing formation with Au-Ag-As association, and the volcanism is the key to its foundation. The Jiuling Group can be divided into two geochemical groups: high-Au layers and low-Au layers, which is due to the inhomogeneous metamorphic reformation. The discriminant functions F_1& F_2 can be established by means of Au, Ag, As, Ti, Cr, V, etc. eleven elements, and the diagram of F_1-F_2 is the distinguishing sign of the Au-bearing formation. Based on the systematic studies on two types of gold mineralization, namely, solo gold with metamorphic fluid and Au, Ag, etc. polymetallic association with magmatic fluid, the authors establish the metallogenic model of gold deposits in the area.
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Ore-controlled Mechanism and Geochemical Characteristics of Gold-bearing Formation in Northwest Jiangxi Terrain |
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| LIU Ying-Jun LI Yang QIU De-Tong and JI Jun-Feng.Ore-controlled Mechanism and Geochemical Characteristics of Gold-bearing Formation in Northwest Jiangxi Terrain[J].Science in China(Chemistry),1993(10). |
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| Authors: | LIU Ying-Jun LI Yang QIU De-Tong and JI Jun-Feng |
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| Abstract: | Based on the geological and geochemical studies on the Middle Proterozoic Jiuling Group in the Northwest Jiangxi Terrain, it is ascertained that this group is a kind of Au-bearing formation with Au-Ag-As association, and the volcanism is the key to its foundation. The Jiuling Group can be divided into two geochemical groups: high-Au layers and low-Au layers, which is due to the inhomogeneous metamorphic reformation. The discriminant functions F_1& F_2 can be established by means of Au, Ag, As, Ti, Cr, V, etc. eleven elements, and the diagram of F_1-F_2 is the distinguishing sign of the Au-bearing formation. Based on the systematic studies on two types of gold mineralization, namely, solo gold with metamorphic fluid and Au, Ag, etc. polymetallic association with magmatic fluid, the authors establish the metallogenic model of gold deposits in the area. |
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| Keywords: | Au-bearing formation geochemistry Northwest Jiangxi Terrain |
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