广东河台金矿成矿流体特征

通过对矿石中石英包裹体的气、液相成分和氢、氧同位素分析,结果表明,河台金矿床成矿流体具多来源的特性,即为变质热液、大气降水和岩浆热液的混合流体.高村和云西矿床不同中段石英包裹体测温等温线图表明,成矿流体是自下而上,自北东向南西方向运移的,矿液运移方向与矿体侧伏方向一致.成矿的物理化学条件分析表明,成矿的环境属于中高温弱碱性还原环境.

CHARACTERISTICS OF MINERALIZATION FLUIDS IN THE HETAI GOLD DEPOSIT OF GUANGDONG

Analysis of gas liquid composition of mineral inclusion and H and O isotope suggests that mineralization fluid of the Hetai gold deposit is a mixed fluid which is made up of metamorphic hydrothermal solution, atmospheric precipitation and magmatic fluid. Vertical isotherm diagram of different levels in Gaocun and Yunxi mines suggests that the mineralizing fluid moved from NE to SW and from deep to shallow, and that the orientation of ore- fluid movement coincide with ore body dipping. Analysis of physical and chemical conditions suggests that mineralizing process was proceeding in middle to high temperature, weak alkalescence, and deoxidizing environment.