Geological Characteristics And Prospecting Perspective Of Nora Native Gold Deposit In Amur State, Russia

Study area is located on the left bank of the Russian Amur River middle reaches ofNora, surround left and right off the Long River tributary basin. Area of432km2,Administrative division of the Russian Federation Amur jurisdiction. Regional geologicalstudies began in the1880s, the early twentieth century geologists began to study the area,the researchers of the Russian State Geological Committee Lipupasi is the first of ageologist. His research (Lipupasi,1901,1909) understanding of the regional geologicalstructure and gold made a great contribution to that era, and particularly the Nora riverfrom the source to the mouth of the valley area.Previous studies analyzed the existing placer gold ore of Nora River actual data (PuriPutnam Kamenev,1978, etc.), to predict the amount of resources to make the evaluationof gold (Sukhov,1976; Melnikov et al,1989; Agere other subjects such person;1992;Lobov et al,1996; Cove multi autumn g et al,1997; Erie because,2007). They found thatthe prospects for the region to make new gold placer highly praised, but do this requires alot of capital investment.In the early nineties Ka Shuer Kafelnikov Valley proved a C1grade gold reservesand make an evaluation. In1992to1993were mined locally. Retained in the nationalreserve in the C1class untapped reserves are: industrial reserves7.4kg, low-grade reserves23kg.From2000onwards, regional gold limited liability company, according to somelicenses were Nora River sand gold exploration and research. The results of these studiesis here to found a new sand gold, including gold dust in Yili Kan Valley, Yi Linda Valley,Ka Shuer Kafelnikov Valley and Valley (Yili Kan left tributary of the river) of mine,which was later used as C1and C2reserves grade level resources were approving (Scott SearleChomskyetal,2002;Mirzehan’s,edc2007.2009）.In recent years conducted stream sediment1:200000, the aim is to provide a basis forregional geological studies geochemical supplement (ГДП-200)(Duomuqiake,2008).Stream sediment samples were analyzed in new analytical methods and on the basis ofsample processing, can be significantly enhanced contrast and scattered halo interpretationof reliability.With the future in-depth studies can be expected to develop research in the area ofmineral have good prospects for development. In this paper, basic geological datacollection, geochemical, structural geology, geological exploration data base in the region,and collected a comprehensive process analysis, to carry out a comprehensive studyfurther geological studies, the following new understanding and results:By Jane1:25000,1:10000geological mapping and soil geochemical survey (samplinggrid of respectively200×40m,100×20m),1:10000high-precision magnetic survey (gridof100×10m), induced polarization symmetry electrical profile measurement (grid of100×20m), using trenching, drilling and other means, to80~40m to240~120m spacing,respectively roughly watershed identified mineralized zone, diorite mineralization belt,Kashubian Tierney Cove study area, the mineralized zone, corner mineralized zone,esoteric ancient Man mineralized zone, МТС mineralization, Yi Linda mineralization,roots and even Branch mine sections, liquid mineralization and other geological, tectonicoverview; roughly mastered the orebody (layer) morphology, occurrence, qualitycharacteristics; detailed investigation should be further noted that the study area(watershed mineralized zone of diorite rock band, Ka Shuer Kafelnikov mineralized zone,corner mineralized zone). According to Chinese standards delineated gold ore bodies6,low-grade ore body12, mineralized body75.6industrial orebodies only two doubleengineering controls to control oblique deep only15.00~32.50m, the rest are all singleengineering controls. Estimates predict the amount of resources (334) level112kg.Induced polarization symmetry measuring profile method identified in the northernpart of the study area, as the two high induced polarization phase shift к linear anomalyzone. Soil geochemical survey in the northern part of the study area, a total of42gold areadelineated anomalies and19gold point exception.