Ore and Fluid Inclusions of the Tongyeong Gold-Silver Deposits

통영(統營) 금광상(金鑛床)의 광석(鑛石)과 유체포유물(流體包有物)

The Tongyeong gold-silver deposits is located in Chungmu City, the southern end of Korean peninsula. The ore deposits is epithermal gold-silver vein emplaced in late Cretaceous andesite, andesitic pyroclastics and quartz porphyry. Ore is composed of pyrite, chalcopyrite, sphalerite, galena, electrum, argentian tetrahedrite, Cu-Ag-sulfides, quartz and rhodochrosite. Filling temperature of fluid inclusions in quartz ranges from 134 to $223^{\circ}C$ and salinity ranges from 1.2 to 3.8 weight % equivalent to NaCl.