| 工准噶尔库布苏金矿床岩脉与金矿成因关系的研究 |
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| 引用本文： | 高怀忠,孙华山.工准噶尔库布苏金矿床岩脉与金矿成因关系的研究[J].岩石学报,2000,16(4):595-601. |
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| 作者姓名： | 高怀忠 孙华山 |
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| 作者单位： | 中国地质大学资源学院,武汉,430074 |
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| 基金项目： | 国家“九五”科技攻关项目 (96-915 -0 2 -0 6-0 1) |
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| 摘 要： | 库布苏金矿床的三个金矿带均产于闪长玢岩和花岗闪长斑岩内。为了研究这些岩脉与金矿的成因关系，测定了含金石英脉中英流体包裹体均一温度、成分、盐度和Ｈ２Ｏ的氢氧同位素，分析了含英脉和相关脉岩及围岩的稀土元素及微量元素，发现石英流体包裹体属有较高的均一温度、低盐度、富ＣＯ２的还原性流体，其阳离子组合为Ｃａ＾２＋〉Ｎａ＾＋〉Ｋ＾＋或Ｎａ＾＋〉Ｋ＾＋〉Ｍｇ＾２＋，阴离子组合属Ｃｌ＾１〉ＳＯ４＾２－〉Ｆ＾－型，
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| 关 键 词： | 金矿床 岩脉 成矿流体 微量元素 成因 矿床地质 |
Study of genetic relationship between dikes and gold orebodies in Kubusu gold deposit in east Junggar. |
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| Gao Huaizhong,Sun Huashan and Zhang Wangsheng. . Faculty of Earth Resources,China University of Geosciences,Wuhan,China.Study of genetic relationship between dikes and gold orebodies in Kubusu gold deposit in east Junggar.[J].Acta Petrologica Sinica,2000,16(4):595-601. |
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| Authors: | Gao Huaizhong Sun Huashan and Zhang Wangsheng Faculty of Earth Resources China University of Geosciences Wuhan China |
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| Abstract: | The three ore belts of Kubusu gold deposit all were preduced in dikes of diorite porphyrite and granodiorite porphyry. To study genetic relationship between these dikes and gold orebodies, we determined the homogenization temperature, composition, salinity and hydrogen oxygen isotope of H 2O of fluid inclusions in quartz of gold bearing quartz vein, REE and trace elements of gold bearing quartz vein and rock of correlative dikes and country rock are detemined. It is found that, the fluid inclusions in quartz is reductive fluid with higher homogenization temperature, lower salinity and CO 2 rich and its cationic assemblage type is Ca 2 >Na >K or Na >K >Mg 2 , anionic assemblage type is Cl ->SO 4 2- >F -, having features of metamorphic fluid. The REE patterns and assemblage signature of trace elements of gold bearing quartz vein and dike rock are prominetly different, indicating that the gold bearting quartz veins have no relation to these dikes in composition. Therefore, we inferred from these analytical results and geologic characteristics of deposit: the rise of magma formed these dikes and ore forming fluid are controlled by same structure and dike rock is brittler relative to their wall rocks, that are essential cause of close space relationship between dikes and gold orebodies. |
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| Keywords: | Gold ore deposit Dike Ore forming fluid Trace elements Genetic relationship Kubusu |
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