Metallogenic Characteristics And Regularity Of The Kubusu Gold Deposit In Sinkiang, China

Kubusu gold deposit located in the Kubusu gold belt of south eastern Junggarorogen, Mineralization showed altered rock crushing. Based on the geologicalcharacteristics, geophysical and geochemical characteristics of Kubusu gold depositsto get the following understanding:(1) Based on field observations, comprehensive analysis techniques such asmicroscopic observation on the distribution of veins, gold ore mineral characteristicswere studied.Fold region developed faults, the overall direction of tectonic line NW~SE trending orebody mostly occur in the secondary faults and fissures in the strongstrain tectonic zone, more than a typical rock containing veins of pyrite, limonite,silicification alteration features, etc., which mainly pyrite flaky, star-shaped, wasdisseminated locally, granular distribution. Ore-bearing rock is mainly Devoniandiorite and tuff.(2) Study of the3rd vein land features show that the veins of gold ore, altereddiorite resistivity low, with an average of76Ω.m, high polarization, up to75%, withan average of31%showed low resistance electrical characteristics of highpolarization. Seam and tuff, tuffaceous sandstone contact zone, with low or highimpedance, low polarization characteristics, its resistivity values180-2100Ω.m,polarization values5-11%. Locally containing carbonaceous polarizationcharacteristics of high performance low resistance, and occurs in the floor of theorebody.(3) Geochemical study of three vein showed that trace elements Au and Ag, Zn,As positive element has a closer correlation can form a good geochemical primaryhalo to indicate deep orebody. Deposit fluid inclusions study showed that the maingangue minerals homogenization temperature of213℃~339℃, salinity of1.22~5.26%; was in-low, medium-low salinity and lower density fluid. Mineralizationdepth roughly between1.73~3.04km, is shallow. Fluid inclusions in the gas phase composition consisting essentially of CH4, CO2, part of the inclusions detected N2.Liquid composed mainly of H2O, showing the nature of the mineralization to restorethe environment.(4) Combined mining geological characteristics and previous research results inthe area that the East Junggar region in the Late Carboniferous-Early Permiancollision in extensional environment, Kubusu gold veins formed in the East Junggar IIPermian magmatic activity and intense tectonic movements during the Devonianstrata experienced a tough, brittle tectonic deformation, hydrothermal ore undertectonic compression, fissures formed from magma along the tectonic rise early, andin the related fracture location precipitated.