| Aleke is located in the southern part of the North China plate,the micro landmass in the southern edge of the Qi Manta Gejialidong fold system.The northern marginal Altyn Tagh fault zone is adjacent to the Altun land block,and the southern boundary is slightly interrupted by the fracture zone,and is connected with the southern Qinling Mountains fold belt.It is the accretion belt of large plates in Southern China and North china.The tectonic action of the district is very strong,and the magmatism is frequent,the geological body is complex,and the mineralization is obvious,and it is a better mineralized concentrated area.Based on the study of regional geological background and metallogenic environment,the metallogenic geological conditions are analyzed.By means of geophysical and geochemical characteristics and remote sensing information characteristics of regional and mining areas,the authors predicted the effective sites of mineralization and determined the direction of metallogenic scale in this area.What is seen in the region is mainly Silurian BAIGANHU formation,and the Paleozoic,Mesozoic and Cenozoic stratigraphic unit etc..Regional magmatic rocks closely related to gold mineralization are mainly Yanshan Hercynian.By observing and studying the field,the main structures in this area are near East,north,South,North and west.North West and North East Fracture structure were mostly developed in the region,constructing a region of linear tectonic magmatite body,In accordance withremote sensing interpretation stamp.Magmatite are granodiorite and plagioclase granite,gold and copper mineral in the work area within the two granite and BAIGANHU group bottom near the contact zone.The ore bodies are mainly hosted in granodiorite near the granodiorite BAIGANHU formation rock in the vicinity,forming structural altered gold deposits.The ore minerals are pyrite and chalcopyrite,following electrum,and some lead,vanadium.The texture of ores is crystal texture,euhedral-granular texture,cataclastic texture,a little bite poikilitic texture and galactoid structure.The ores of structure is infection structure and massive texture.Hercynian magmation furnish matter with heat quantity.Based on the annalysis of mineralization geological condition,and combined the characteristics geophysical and geochemical prospecting anomalies,we summarise collective geological prospecting indications for the deposit.Hercynian granodiorite and plagioclase granite gold abundance is relatively high,close relationship with the genesis of ore bodies,and it is closely related to the ore body,which is the prospecting indicator of magma.The east northeast trending fault is the internal ore controlling structure tectonic intersection prospecting is an important structural sign;with the formation of mineralized silicification,pyritization,sericitization,chloritization and rock alteration ore;cuttings can be used as a direct geochemical anomaly high marks;low negative anomaly of geophysical prospecting mark.According to geological conditions and favorable metallogenic model,combined with the establishment of the comprehensive prospecting model,we delineated 3 ore prospecting areas in mining area,with a selected area of the prospecting target area 1,the author thinks that the area knowler allak has more potential for the gold copper. |
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