| Fuxili area located in the north of Heilongjiang province, in the binding site of thenorthern margin of xiangan-monggolia orogenic belt and Ergun block, which belongs toWalali-Beixili mineralization subzones of Ergun-Xingan ore belt. The study area has thelower lever of work, which is limited to geological survey and prospecting of the targetore area or its peripheral, in order to further identify the mineral resources and expandprospects in the area, in the paper, based on analyzing and researching1:50000integratedinformation systematically of the geological, geophysical, geochemical, remote sensingand mineral, we extract above the existing flag information, select the favorablemetallogenic prospective area and indicate the direction of the prospecting work in thefuture.The strata exposed in the region are mainly Xinghuadukou rock group ofNeoproterozoic (Pt3xh), Ordovician Kunasenhe group(O1k), Huangbanji group(O1h) andDayixikanghe group(O1-2dy), the upper Jurassic Manitu group(J3mn), the lowerCretaceous Guanghua group(K1gn), and Quaternary sediments. Regional goldmineralization is closely related to the magmatic activity is mainly the Caledonian andHercynian, through field observation and study, the contact area of Hercynian Moyitebody and the Xinghuadukou group of Neoproterozoic has obvious mineralization phenomenon, is the favorable output position of gold deposit, and the Xinghuadukougroup a is the main source bed of gold deposit in the area.Through comprehensive analysis of petrological and geochemical characteristics ofCaledonian and Hercynian magmatic rocks in the area, the result show that Caledonianmagma was mainly came from the crust, belonging to peraluminous and High-Kcalc-alkaline volcanic arc granites; Hercynian granites show the characteristics of high K,belonging to aluminum shoshonitic or high-k calc alkaline rock series, which may also beaffected by some late alteration，both of them show a feature of island arc magmas bycontrasting with the characteristics of trace elements.The structure is developed in the area, based on fracture and brittle ductile shearzone, the intersections of the NE trending faults and the NW trending faults and thetransition area NE trending faults to the nearly East-West are main part of the output ofgold.Study on the characteristics of aeromagnetic anomaly were did in the area, theaeromagnetic anomaly is divided into4zone and12aeromagnetic anomaly, we alsobelieve that the associated area of positive and negative anomalies have large anomalygradient, that may be affected by the fault or oralteration zone, leading to moreconducive to mineralization.Through the data processing and analysis of1:50000stream sediment in the region,we believe that the main ore minerals are Au, Ag and Mo in the area,followed by Cu, Pb,W and Bi and so on. And this article delineate285single-element anomalies and44combination element anomaly based on analysis of the metallogenic elements anomalies,Those element anomalies mainly distributed in the edge and external of ring structure,showing the clusters distribution of north east and the band distribution of north west, thepieces distribution of the intersection and composite parts.Combined with geology, geophysical and geochemical exploration, remotesensing and mineral information in the Fuxili area, this paper has selected8metallogenic province, including3first grade (Class A) metallogenic prospective area,3secondgrade (class B)metallogenic prospective area and2third grade (class C) metallogenicprospective area, and finally select the two area of class A for ore prospecting target areaby evaluation of prospective areas for ore prospecting potential. |
PDF Full Text Request