MULTIPLE ORE - FORMING INFORMATION INTEGRATION AND QUANTITATIVE PREDICTION IN THE DISTRICT ZONE AND ZINC DEPOSIT AREA OF Sanchahe, Lancang

Three ChaHe bazi lead-zinc mine exploration area is located in chang ning-Meng Lian rift belt, western yunnan area is important for silver,lead and zinc copper polymetallic metallogenic belt,and the old factory has been found very large silver deposits belong to "sanjiang" metallogenic belt (southern),the ore-forming environment is superior, rich mineral deposits, mineral and varied. The study on the analysis of regional geological background,metallogenic conditions, regional remote sensing geology, regional geochemical anomaly characteristics, on the basis of extraction and analysis of mineralization favorable information, establish multivariate information prediction model, quantitatively delineated prospecting prospect area. The concrete understanding and the summary of results is as follows:1.Geological characteristics:the west to the north of faulted structure is given priority to,the zone (mineralization) main outdoor layer of mud on the basin series,the lower carboniferous in willow group, according to liu set period,in the carboniferous and the upper carboniferous series. Strong magmatism in the area, yanshan epoch, indo-chinese epoch granite are widely distributed. See magnetite,pyrite mineralization in the area,the red clay type manganese ore, the former is mainly distributed in the east of exploration, and controlled by NW-SE to fault and influence,along the fracture structure has the potential for magnetite.2.Remote sensing characteristics:Exploration area with old factory in the south of old ring with axial overlapping part of the lens, east, north west north of linear structure to give priority to. Article on linear density, such as the number and symmetry, the number of intersection point, the center prior degrees characteristics made quantitative analysis, that different ring structures center or edge, and linear structure,wire ring interchange are favorable for mineralization and prospecting area.3.Geochemical characteristics:application of the principle of mathematical statistics analysis for Au, Ag, As, Co, Cr, Cu, Ni, Pb, Zn, Mo, Mn statistical characteristics of11elements,results show that the anomaly high value of multielement composite concentration distribution near the fracture and interchange, illustrates the ore-controlling role of fracture structure.4.Optimization of target:according to the geological, geochemical and remote sensing metallogenic information analysis, selecting favorable mineralization and ore-controlling factors, information method is used to calculate the single variables(18),composite(2) and the comprehensive information, set the ore-prospecting information threshold (3),and8from delineated favorable metallogenic target area,3A-level(A1,A2,A3mineralization anomaly area),3B-level (B1,B2,B3,mineralized anomaly area),2C-level (C1,C2mineralization anomalies).