【作者】 张作衡； 毛景文； 杨建民； 张招崇； 王志良； 左国朝；

【Author】 Zhang Zuoheng Mao Jingwen Yang Jianmin Wang Zhiliang(Institute of Mineral Deposits, GAGS, Beijing) Zhang Zhaochong Zuo Guochao(Institute of Geology, CAGS, Beijing) ( Gansu Bureau of Geology and Mineral Resources, Lanzhou )

【机构】 中国地质科学院矿床地质研究所； 中国地质科学院地质研究所； 甘肃地勘局地质科学研究所；

【摘要】 文中主要介绍了甘肃省小柳沟石英脉型钨（钼）矿床的流体包裹体的稳定同位素地球化学特征,探讨了成矿流体的地球化学.流体包裹体的研究表明,成矿热液具中低温、低盐度和低密度的特点,稳定同位素的研究结果表明成矿溶液的主体为大气降水.同时根据流体包裹体的特征及其成分推测作为成矿溶液组成部分的CO₂-CH₄-H₂O体系可能为一种特殊类型的成矿流体.更多还原

【Abstract】 Xiaoliugou W(Mo)deposit, related to Caledonian granite-Xiaoliugou granodiorite intrusion in the west part of northern Qilian Mountains, is located in Qiqing Township, Subei County,Gansu Province. It is a large-scale W(Mo) deposit and the quartz-vein is the main type of mineralization. This study mainly introduce the characteristics of fluid inclusions and stable isotopic geochemistry and discuss the ore-forming fluids geochemistry of the Xiaoliugou deposit . The analyses of fluid indusions show that the ore-forming fluid is charactered by middle-low temperature, low sality and low density and the compositions of isotopes reveal that the fluid is dominately derived from meteoric water.Based on the characteristics of fluid inclusions and their composition, We deduce that as component part of the ore-forming fluid, the CO2 - CH4 -H2O system is possibly a special ore-forming fluid.更多还原