| 南秦岭泥盆系典型金矿床高盐度流体脑其深源特征 |
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| 引用本文： | 谢玉玲,钱大益.南秦岭泥盆系典型金矿床高盐度流体脑其深源特征[J].岩石学报,2000,16(4):655-660. |
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| 作者姓名： | 谢玉玲 钱大益 |
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| 作者单位： | 北京科技大学资源工程学院 |
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| 基金项目： | 国家自然科学基金项目 (49972 0 3 1)，陕西省太白金矿，北京科技大学科研项目资助 |
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| 摘 要： | 对赋存于南秦岭泥盆系浅变质碎屑岩中的陕西太白金矿到八卦庙金矿主成矿阶段的石英和含铁白云石中的流体包裹体进行研究，发现局部富含高盐度、含子矿物的流体包裹体，通过光学显微镜，电子探针（ＥＰＭＡ），扫描电镜／能谱（ＳＥＭ／ＥＤＳ）发现子矿物主要为黄铁矿，铁白云石、石盐、毒砂及一些成分复杂的子矿物，认为矿床成矿流体具复杂的物理化学条件，不同于一般的热液金矿床，结合矿床形成的大地构造位置分析，主成矿阶段矿物
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| 关 键 词： | 金矿床 泥盆系 高盐度流体包裹体 深源流体 地质 |
Study on high saline ore-forming fluid and its deep-source characteristics of typical gold deposits in Devonian, south Qinling, China. |
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| Xie Yuling,Qian Dayi and Xu Jiuhua. . Resources Engineering School,University of Science and Technology Beijing,Beijing,China.Study on high saline ore-forming fluid and its deep-source characteristics of typical gold deposits in Devonian, south Qinling, China.[J].Acta Petrologica Sinica,2000,16(4):655-660. |
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| Authors: | Xie Yuling Qian Dayi and Xu Jiuhua Resources Engineering School University of Science and Technology Beijing Beijing China |
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| Abstract: | High salinity fluid inclusions containing daughter minerals have been found in quartz and ankerite of main mineralizing stages, Taibai and Baguamiao gold deposits of Shaanxi province, located in South Qinling. Both deposits occur in Devonian low grade metamorphic rocks. Daughter minerals were detected as pyrite, ankerite, halite and arsenopyrite by SEM/EDS and EPMA. It is concluded that ore forming fluid was formed under complex physico chemical conditions. According to the tectonic setting, mineral association of main mineralizing stages, high PGE content in hydrothermal sulfides, Chondrite normalized REE pattern of carbonate cement from Taibai gold deposit, carbon isotope characteristics, it is believed that ore forming fluid has a deep (mantle) source. |
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| Keywords: | Gold deposits Devonian South Qinling High saline aqueous inclusion Deep source fluid |
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