A study of fluid inclusion characteristics and genetic type of the Tawuerbieke gold deposit in Yining County,Xinjiang
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    Abstract:

    The Tawuerbieke gold deposit is one of the important Au deposits in Tulasa fault basin of the West Tianshan Mountains. The rock types in the study area mainly consist of andesite, andesitic pyroclastic rocks of the Dahalajunshan Formation and monzonite porphyry rocks, by which the gold mineralization is hosted. The orebodies are controlled by faults, and alterations are strongly developed in the wall rocks. The metallic minerals mainly include pyrite, native gold, hematite and chalcopyrite, whereas non-metallic minerals comprise quartz, plagioclase and calcite. The mineralization can be divided into three stages, i.e., quartz and pyrite stage, quartz and sulfide vein stage, quartz and carbonate stage. The type of fluid inclusions in quartz and calcite is simple, mainly comprising vapor-liquid two-phase inclusions and pure liquid inclusions. The homogenization temperatures of inclusions vary from 100℃ to 196℃. The salinities are 0.0%~7.3% NaCleq. The densities range from 0.9 g/cm3 to 1.0 g/cm3. The estimated pressures of the ore-forming fluids range from 5.2 MPa to 81.9 MPa, corresponding to the depth of ore-forming range from 0.5 km to 7.4 km. The features of the inclusions demonstrate low temperatures, salinities and densities with small pressures and low depth. In combination with the characteristics of the ore geology, fluid inclusion and the previous results, the authors have reached the conclusion that the Tawuerbieke gold deposit is an epithermal gold deposit.

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于小亮,蔡成龙,顾雪祥,马延景,魏小林,张得鑫,杨延乾,李嘉泰,2016,新疆伊宁县塔吾尔别克金矿床流体包裹体特征研究及矿床成因[J].岩石矿物学杂志,35(6):1055~1067. YU Xiao-liang, CAI Cheng-long, GU Xue-xiang, MA Yan-jing, WEI Xiao-lin, ZHANG De-xin, YANG Yan-qian, LI Jia-tai,2016,A study of fluid inclusion characteristics and genetic type of the Tawuerbieke gold deposit in Yining County, Xinjiang[J]. Acta Petrologica et Mineralogica,35(6):1055~1067.

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History
  • Received:May 03,2016
  • Revised:October 11,2016
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  • Online: November 21,2016
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