Fluid inclusion studies on the epithermal gold deposits in Kagoshima, Japan

The homogenization temperatures and salinities of fluid inclusions in quartz, adularia or calcite from the Hi shikari and Kushikino gold deposits of epithermal vein type are around 200-220°C and 0.3-0.6 wt% NaCl equivalent. These values of both gold deposits are clearly low. The homogenization temperatures of the Kasuga gold deposits of the Nansatsu type silicified orebody show the spread and high values indicating the evidence of boiling. Gas contents of CO2, N2, CH₄ and Ar in fluid inclusions from the Hishikari gold deposits were quite low.