Fluid inclusion study on the Piaotang tungsten deposit, southern Jiangxi province, China

Piaotang tungsten deposit is one of the most important quartz-vein type wolframite deposits in Southern Jiangxi Province where is the most important tungsten producing place in China, The wolframite-bearing quartz veins have the characters of multistage mineralization. "Fluid inclusion assemblage" (FIA), which has been successfully applied to the research of multistage fluid activities recently, was adopted to the petrographic and microthermometric study on the fluid inclusions in the wolframite-bearing quartz veins from the major mineralizing stage of Piaotang tungsten deposit. The components of the individual inclusions from different FIAs were determined by Raman microspectroscopy. This study shows that the major tungsten mineralizing process experienced two stages of fluid activities, and that the main component of fluid is H2O with minor or without CO2.