The Minerogenetic Condition And Prospecting Model Of Aketasi Copper-gold Deposits In Xinjiang

The Ake Tasi gold and copper mine is located in Fuyun county of XinJiang.It is teconically located in the boundary Siberian plate and Junggarplate;Eerqisi majordislocation is located in central,the mine is close to the Jungger.It located in the Junggar plate northeastern margin of the Olongapo Saar late Paleozoic island zone.It is geological conditions.By field geological inestigation and indoor research,combined with previous researchwork,the author began his work.Through field geologicalobservations,profile measurement system,sample collection,petrology and ore graphy,,hydrogenand oxygen isotopic test,sulfur isotopic test,and maine,rare earth trace elementstest and so on.Three mineralized alteration zonesⅠ,Ⅱand Ⅲ alteration zones have been found through grological mapping and trenching.Rusty gold and goldmineralization have been intrenches of NO. Ⅰ alteration zone.Malachite mineralization,epidotization and chloritization can be found in NO. Ⅱ alteration zone.There has malachite and chalcopyrite inthe No. Ⅲ alteration,whtich is silication,carbonatization.Gold is in the quartz veins,plagioclase granite and phyllite contact zone of NO. Ⅰ alteration zone.Copper is mainly found in the silicified volcanic breccia,occurrence of strong sericite rock,biotite,silicification and otheralteration.Native metals mainly are chalcopyrite,pyrite,specularite and few rusty gold.The physical abnormalities of mining area belongs to aluminum-K calc-alkaline series;it’s spider diagram showed a moderate right-wing“W”type,relativelyenriched in Ba、U、K、Pb、Sr,and relative lossed of Nd、Ti;the low of Nd,Ti is showed to mix to crustal material.Ore-forming temperatureis between260°-350°,the composition of the ore-forming fluid is rich in Na⁺,Ca²⁺,Mg²⁺,depletedCH₄,H2.The results of sulfur isotope test show that it may be derived form the mantle.Ore-forming fluids is mainly magmatic water,mixed with few precipitation,which is low salinity, low density, weak acidic.Ore-formation process canbe divided into two ore-forming stage,four mineralization stages stage; By thegeochemical characteristics of mine rockand structures,the copper-gold of genetic due to the type of the ductile shear the fracture controlled as a subvolcanichydrothermal deposits.Under geological factors,geophysical,geochemical anomaly characteristicsand metallogenic model of AkeTAsi goldg and copper,establish geological-geo physical-geochemical prospecting model,has an im portent demonstration of guiding significance.