Mierallization Diversity Analysis Of Endogentic Metalliferous Deposits And Quantitative Mineral Prediction In Western Part Of Henan Province

Western part of Henan region lies across two tectonic belts which are south margin of north China plate and north Qinling. The evolution history of this region is complex and of multi-stage. With advantageous ore-forming geological circumstance, it formed one of important concentration area of Mo, W, Al, Au, Ag, Cu, Pb and Zn in China. According to the three-component theory, the author analyzed the diversity of mineralization in the studying area and built spectrum of ore deposits. Based on all of these, the author predicted the favorable regions for deep mineral exploration and quantitatively delineated geological anomalies and potential areas of mineralization, by means of GIS technique and analysis of geology, geophysical and geochemical data.According to tectonic location, ore-forming characteristics, the distributing regulation of mineral deposits, strata, structures ,magmatic rock and ore-forming epochs, west Henan region can be divided into two metallogenic regions which are: metallogenic region of Au, Ag, Mo, W, S ,Fe, Pb, Zn, Rare elements, REE and polymetallic metals on south margion of north China plate and metallogenic region of Au, Cu, Mo, Cr, Sb, Hg, As and polymetallic metals in north Qinling. The metallogenetic epochs of main endogenesis mineral deposits are controlled by region structure-magmas activities, mainly at Precambrian, Caledonian, and Yanshanian. The corresponding metallogenic changed from Fe-Cu, Cu-Pb-Zn-W-Mo, to Pb-Zn-Ag-Au- Sb.The geologic conditions in the studying area is complicated with frequent tectonic- magmatic movement and various of minerals, the diversity of mineralization mainly embodied in diversities of ore-controlled geologic conditions, ore-forming epochs, mineral types, mineral combinations and genesis of ore deposits. According to the diversity of mineralization, the time-space-genesis spectrum of main endgenesis ore deposits in the area was built.Based on the analysis of ore deposits space-time evolvement, mineralization zoning characteristics, extension of main ore-controlled structures in deep and other factors, the author summarized regional ore-forming rules and the prospect in deep area.Guided by three-component theory, through analysis of geologic, geophysical and geochemical data of Lushi-Luanchuan area by Gis technology, the geo-anomalies were distracted; the prospecting areas were delineated quantitatively.Main prospecting targets were also analyzed.