| Dating and Fluid Geochemistry of the Sarkobu Gold Deposit in Altay, Xinjiang, China |
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| 作者姓名： | DING Rufu WANG Jingbin ZHAO Lunshan MA Zhongmei and ZHANG Jinhong Beijing Institute of Geology for Mineral Resources Beijing Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China University of Geosciences Beijing No. Team of Xinjiang Geological Exploration Bureau for Nonferrous Metals Altay Xinjiang |
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| 作者单位： | DING Rufu，WANG Jingbin，ZHAO Lunshan，MA Zhongmei and ZHANG Jinhong Beijing Institute of Geology for Mineral Resources，Beijing 100012;Institute of Geology and Geophysics，Chinese Academy of Sciences，Beijing 100029China University of Geosciences，Beijing 100083No. 706 Team of Xinjiang Geological Exploration Bureau for Nonferrous Metals，Altay，Xinjiang 836500 |
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| 摘 要： | The dating of fluid inclusions of quartz yields an Ar-Ar isochrone age of 320.4±6 Ma. Three types of fluid inclusions have been identified with the homogenization temperature ranging from 157℃ to 362℃. The homogenization temperature consists of two groups. The first group varies from 157℃ to 166℃, and the second from 232℃ to 362℃. Their chemical composition is dominated by Na+-Ca2+-Mg2+ and Cl-. The relative concentration of ions is characteristic by Na+>Ca2+>K+>Mg2+ and C1->SO42-> F-. The δD and δ18O values indicate that the ore-forming fluid originates from mixing of multi-source water. The Sarkobu gold deposit has experienced two mineralization stages: gold was enriched during the volcanic-exhalative-sedimentary process in the early stage, while the gold deposit was finally formed under compression-shearing during the orogenic period.
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| 关 键 词： | 成矿年代 地质起源 含矿铃 金沉积矿 新疆 |
Dating and Fluid Geochemistry of the Sarkobu Gold Deposit in Altay, Xinjiang, China |
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| Authors: | DING Rufu WANG Jingbin ZHAO Lunshan MA Zhongmei and ZHANG Jinhong Beijing Institute of Geology for Mineral Resources Beijing |
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| Institution: | DING Rufu,WANG Jingbin,ZHAO Lunshan,MA Zhongmei and ZHANG Jinhong Beijing Institute of Geology for Mineral Resources,Beijing,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing China University of Geosciences,Beijing No. Team of Xinjiang Geological Exploration Bureau for Nonferrous Metals,Altay,Xinjiang |
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| Abstract: | Abstract The dating of fluid inclusions of quartz yields an Ar‐Ar isochrone age of 320.4±6 Ma. Three types of fluid inclusions have been identified with the homogenization temperature ranging from 157°C to 362°C. The homogenization temperature consists of two groups. The first group varies from 157°C to 166°C, and the second from 232°C to 362°C. Their chemical composition is dominated by Na+‐Ca2+‐Mg2+ and Cl?. The relative concentration of ions is characteristic by Na+>Ca2+>K+>Mg2+ and Cl?SO42‐>F?. The δD and δ18O values indicate that the ore‐forming fluid originates from mixing of multi‐source water. The Sarkobu gold deposit has experienced two mineralization stages: gold was enriched during the volcanic‐exhalative‐sedimentary process in the early stage, while the gold deposit was finally formed under compression‐shearing during the orogenic period. |
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| Keywords: | metallogenetic age genesis ore-forming fluid Sarkobu gold deposit Altay Xinjiang |
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