| Altyn Tagh fault is located in the Xinjiang, Gansu, Qinghai border region,distributed in the southeast of Xinjiang Uygur Autonomous Region, becomed one ofthe most significant sinistral slip faults in the middle of the Asian continent. Itsformation linked with the uplift of the Qinghai-Tibet Plateau and the Himalayancollision. Since then, the Altyn Tagh fault zone becomes one of the hot spots of theglobal Earth science. The Altyn mining areas is controlled by the Altyn Taghstrike-slip faults, to be an important polymetallic metallogenic zone in NorthwestChina, the region is becoming a hot area of the Geology and Mineral Explorationwork. The Xorkol Corridor is located in the middle of the Altun, controlled by AltynTagh main fault and it had growth faults and superior metallogenic conditions.Therefore, carrying out geological exploration and research work in the Sol Curryareas have important theoretical and practical significance.In this paper, Cu-Ag polymetallic deposit of Dieceng Mountain in Xinjiang wastaken as research object. Based on the previous work, using geological comprehensiveanalysis method, through detailed field geological investigation and laboratoryanalysis, this paper researches and summarizes the regional ore-forming geologicalbackground, ore deposit geology characteristics and genetic in the Dieceng mountainarea. Through the extraction to geophysical and geochemical exploration informationof the mining area, combined with the modern metallogenic prediction theory andmethod, complete metallogenic prediction research of the mining area. The mainachievements are as follow:(1) Through the field exploration and indoor research analysis of Diecengmountain mining area, the paper shows that ore body mainly occurs in the fourthlithologic section limestone and pieces siliceous rocks of the Mesoproterozoicjinyanshan formation. The thrust fault system to EW is the leading ore structure; thesubprime fracture to SN—F2and F3is the main ore-bearing structures, theintersection part of nearly EW fracture and subprime fracture to NNE has bettermineralization. (2) Through the further analysis for geological characteristics about Cu-Agdeposits in Dieceng Mountain, ore bodies are centralized in about450meters longand100meters wide range. Five surface ore bodies have already delineated, the largernumber is No.1and No.4ore body at present. The primary ore minerals are mainlychalcocite, the second one is bornite and chalcopyrite. The oxidized ores are mainlymalachite, the second for covellite. There are mainly microcrystalline, cataclastic,disseminated and massive structure, the oxidized ores mainly have banded, veinlet,veined-network structure. Silicification, peacock and malachite mineralization is themainly altered type. Through the sulfur and lead isotope analysis,combined withregional geological conditions, the copper deposit types of Deicing mountain shouldbe Marine deposits type transformation(3) By the1:10000rocks geochemical profile measurement in Dieceng Mountain,six copper abnormal areas were circled and showing a nearly east-west distribution.The D1, D4and D5halos have larger area, three-scale Belts and the obvious center ofthe concentration. So they can be served as the target area forecastThe correlation analysis of geochemical exploration data shows three kinds ofAs、Sb、W elements can be used as a typical index for comprehensive analysis andmetallogenic prediction. Ag and As Sb ore elements for the front; Pb Zn Au anomalyelement for orebody province; Cu、W and Mo for the tail anomaly element, it reflectsthe geological mineralization stage and complexity.(4) According to the geological and geophysical results of Dieceng Mountain inXinjiang and comprehensive analysis of geologic features, the whole zone hasdelineated as follow: Aclass one place; B class one place and C class one place. |
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