【摘要】 三道湾子金矿位于大兴安岭燕山期成矿带东南部,为典型的石英脉型金矿。通过对矿床地质特征、成矿期次及硫、氢、氧同位素组成和流体包裹体测温研究,讨论了成矿流体的来源及矿床形成的温度。黄铁矿δ34S值为-1.1‰～1.7‰,显示硫具地幔来源的特点;石英δ18O水值为-15.3‰～-9.9‰,δDV-SMOW值为-110‰～-85‰,说明成矿流体主要为大气降水;流体包裹体均一温度为181～267℃;表明三道湾子金矿为与火山热液有关的中-低温浅成热液矿床。更多还原

【Abstract】 Sandaowanzi gold deposit is located in the southeast of Daxinganling metallogenic belt during Yanshanian epoch. It is a typical quartz vein gold deposit. Geological features, mineralizing periods, fluid inclusions and S, H, O isotope compositions are discussed to identify ore-forming source and temperature. δ³⁴S values of pyrite range from -1.1‰ to 1.7‰, showing mantle-derived sulfur character. δ¹⁸O water values of ore-forming fluids responsible for quartz formation are estimated to be -15.3‰ -9.9‰. δD （V-SMOW） values of inclusion fluids in quartz are measured to be -110‰ -85‰. The meteoric water was dominated. Homogenization temperatures are from 181 to 267℃. The Sandaowanzi gold deposit is a mesothermal-epithermal volcanogenic gold deposit.更多还原