Characteristics Of Forming Fluids And Metallogenic Prediction In The Depth Of Hatu Gold Deposit

Hatu gold deposit locating in the Xinjiang Uygur Autonomous Region, is explored muchearlier in China. Hatu Gold Mine (Qi mine) altered rocks of the deep study using fluid inclusionpetrography, microthermometry science and sulfur, hydrogen and oxygen isotopic compositionanalysis and other methods to discuss the mining area into deep characteristics of the ore fluid,and compare different deep fluid mineralization temperature to predict deep Hatu goldmineralization.(1) The study results show that the diagram gold deep ore-bearing rocks are mainly of alteredrocks. Mineralization of the altered rocks can be divided into five mineralization stages:quartz-albite stage(I), pyrite-albite stage (II), arsenopyrite-carbonate stage (III), chalcopyrite–carbonates stage (IV) and quartz-calcite stage (V).(2) Metallogenic fluid inclusions for the gas-liquid two-phase inclusions of quartz vein typeore fluid inclusion homogenization temperature significantly can be divided into three intervals, ie,320to360oC,240~280oC, and180~200oC, which represent the temperature range of Part I, II andIII mineralization stages. Decorated variable type ore fluid inclusion homogenization temperatureis divided into three intervals, ie360oC,320oC and350oC and200oC and~280oC. Belong to thelow-temperature ore-forming fluids.240~280oC is the Hatu gold deep deposits in the precipitationof gold mineralization in the peak of this mine out of gold and quartz veins and decorative rockoutput relations. Quartz vein type ore bodies of the three mineralization stages correspond to thealteration type ore stage II, Phase III to IV and stage V mineralization from the deep. Figure golddeep salinity range for5.71wt%~9.21wt%, the salinity of the main mineralization stage range is6.88wt%~8.00wt%.(3)Deposits of sulfur isotope studies have shown that:shallow sulfur the isotopeδ34Svalue-1to+5.1‰,apparently deep close to the meteorite sulfur,reflecting the gold from thedeep.(4) The oxygen isotope composition of mineral deposit studies have shown that: Hatu gold deposit fluid inclusions water δ18O value of-4.65‰to11.65‰in nature, the oxygen isotopecomposition of the maps on the granite magma water interval, indicating that the ore-formingfluids were mainly magmatic water.(5) According to the comparison of different depth of the ore-forming fluid temperature,table the minha diagram gold deep mineralization conditions. The ore body is the main goldbearing altered rock.