| 三江北段查涌铜多金属矿床成矿流体特征——流体包裹体及氢氧同位素证据 |
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| 引用本文： | 王凤林,詹小飞,谭俊,赵少卿,李小亮.三江北段查涌铜多金属矿床成矿流体特征——流体包裹体及氢氧同位素证据[J].地质找矿论丛,2017,32(1):15-23. |
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| 作者姓名： | 王凤林 詹小飞 谭俊 赵少卿 李小亮 |
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| 作者单位： | 1. 青海有色地质矿产勘查局地质矿产勘查院,西宁,810007;2. 中国地质大学(武汉)资源学院,武汉,430074 |
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| 基金项目： | 中国地质调查局青海省多彩地区铜多金属矿整装勘查区专项填图与技术应用示范 |
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| 摘 要： | 在矿床地质特征研究和成矿阶段划分的基础上,选取三江成矿带北段查涌铜多金属矿床主成矿热液期的矿石样品,进行了流体包裹体显微测温和氢氧同位素测试。流体包裹体研究结果表明,矿物中包裹体以富液相为主,均一温度为320~360℃,盐度w(NaCl,eq)=3%~5%,显示岩浆热液矿床的流体特征;氢氧同位素测试结果显示,δD=-110.0×10~(-3)~-95.5×10~(-3),平均-104.4×10~(-3),δ(~(18)O_(V-SMOW))=-2.2×10~(-3)~2.5×10~(-3),平均-0.6×10~(-3),表明其主成矿期的成矿流体以岩浆水为主,并伴有少量大气降水的加入。
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| 关 键 词： | 查涌铜多金属矿床 流体包裹体 氢氧同位素 三江北段 青海省 |
| 收稿时间： | 2015/11/9 0:00:00 |
Characteristics of ore-forming fluids from the Chayong copper-polymetallic deposit in the north of Sanjiang metallogenic belt: fluid inclusion and H-O isotope evidence |
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| WANG Fenglin,ZHAN Xiaofei,TAN Jun,ZHAO Shaoqing and LI Xiaoliang.Characteristics of ore-forming fluids from the Chayong copper-polymetallic deposit in the north of Sanjiang metallogenic belt: fluid inclusion and H-O isotope evidence[J].Contributions to Geology and Mineral Resources Research,2017,32(1):15-23. |
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| Authors: | WANG Fenglin ZHAN Xiaofei TAN Jun ZHAO Shaoqing and LI Xiaoliang |
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| Institution: | Qinghai Institute of Geology for Mineral Resources, Xining 810007, China,Institute of Geological Survey, China University of Geosciences, Wuhan 430074, China,Institute of Geological Survey, China University of Geosciences, Wuhan 430074, China,Institute of Geological Survey, China University of Geosciences, Wuhan 430074, China and Qinghai Institute of Geology for Mineral Resources, Xining 810007, China |
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| Abstract: | Based on geological characteristics and mineralization stage division ore samples of the main hydrothermal ore-forming stage of the Chayong copper-polymetallic deposit in the north of Sanjiang metallogenic belt are collected to make the fluid inclusions microthermometry and hydrogen-oxygen isotopic analyses.The result shows that the inclusion is dominated by liquid phase,homogenization temperature 320 ～360 ℃ and salinities w(NaCl,eq)=35％ that is characteristic of magmatic hydrothermal deposit;δDvalues-110.0×10-3～-95.5×10 3 andδ(18Ov-sMow)=-2.2×10-3～2.5×10-3,average-104.4 × 10-3 and-0.6 × 10-3 indicating that fluid of the main ore-forming stage is dominated by magmatic water incorporated with a small amount of meteoric water. |
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| Keywords: | Chayong Cu-polymetal deposit the northern Sanjiang metallogenic belt fluid inclusions hydrogen and oxygen isotopes Qinghai province |
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