The Research Of Molybdenite Mineralization Prediction At The Nanping Region In Jilin Province And Helong City

The Nanping area is located in the Yanbian Korean Autonomous Prefecture andHelong city.It is on the Helong block which is on the northern margin of Sino-Koreanparaplatform and plots, is the ancient Asian metallogenic domain. The Nanping area isone of the16Metallogenic belts which are identified by the China Geologicalsurvey.This area is in the eastern part of the Liaodong-Southern Jilin ore belt, andeast-and Jin Tongnie, the mineralization and Fushun-and too ancient bronzegreenstone formation distribution area of cross section, regional metallogeniccondition is good.At present, many scholars have done a lot of research and have their owncharacteristics. But the metallogenic regularities and metallogenic prediction researchin our country are still limited to empirical summary stage, did not formed a unifiedtheory system. With the emergence of a variety of new theories,new methods still need to constantly improve. This paper selected the Nanping areain Helong city and with integrated information prediction theory as the guide,strengthen and mineralization related to basic geological research, strengthen theregional metallogenic regularity, full use of geophysical, geochemical shows thegeological prospecting information; the forecasting technology, qualitative predictionin delineation basis, realization study on prediction of resource potential evaluation ofdistrict molybdenum, as follow-up to the optimization of prospecting targets in andprovide scientific basis for resource evaluation. This paper mainly focuses on thefollowing research work:1. At first, I summarize the Nanping regional metallogenic regularity.Preliminary I identify the basic geological characteristics of the stratigraphic,magmatic, tectonic and metallogenic geological's factors. Papers on the Nanpingregion characteristic of ore deposits-ShiMa hole ore potentiality of rock mass scale,shape, form in altered mineralization and characteristics of the system are analyzedand refining.2. The2d empirical mode decomposition is a kind of decomposition method ofnonlinear data. This article uses the improved Xie Biede method, envelope methodand operation speed improvement. Through the two-dimensional empirical modedecomposition to obtain rich geochemical information for from multiple aspects of geophysical, geochemical field characteristics, extraction and mineralization related tocontent, metallogenic prospective area of objective prediction has important role.3. I collected1:50000geophysical (magnetic) data in the Nanping area, and usedjust like analytic continuation methods deal with the study area1:50000high precisionmagnetic survey data. I compared the upward continuation results with the empiricalmode decomposition, application of empirical mode decomposition for IMFcomponent more accurately, objectively reveals and city Nanping area geophysical(Geological) structural characteristics. And the application of empirical modedecomposition can reach field decomposition effect, there is no information confusedsituation, this article on the basis of research on the IMF components of the horizontaldirection, vertical direction derivative derivative processing, based on the differentgeological unit magnetic field space form of description, inference and interpretationof magnetic anomaly, reconstruction of study area tectonic framework, and on thebasis of the preparation of the magnetic body distribution and structure interpretationmap.4. Collected the Nanping1:50000stream sediment geochemical data, anddetermined the lower limited of the elements such as Au, Ag, Mo, Cu, W. This articleuse the factor analysis,correlation analysis, cluster analysis, multivariate statisticalmethods the distribution and enrichment of various elements in the studyarea characteristics and paragenesis, and identify the geochemical anomalyprospecting criteria. Combined with the geochemical data on the characteristics of thepreparation of a single-element geochemical anomaly maps, anomaly maps of thecomposite element geochemical anomaly map, multi-element geochemicalaccumulation.5. The reasearch work is based on the GIS platform,combined withthe Shima hole typical deposit, and metallogenic regularity of the known in the studyarea and stratigraphic, magmatic,tectonicand other geological features,and geologicalfeatures, and geophysical and geochemical anomalies, geostatistical unit has beendivided, extract and deposit close gelogicalsigns,be able to the geophysicalsign,geochemical,and other direct or indirectinstructions underground existenceof the deposit prospecting indicator as a predictor variable, and further convertedinto geological–mathematical model of the predictor variables to optimizethe predictor variable established based on the Shima hole typical deposits in theground,things of comprehensive prospecting model.6. Metallogenic prediction theory, the use of fuzzy neural network, combinedwith prospecting model based on the preparation of comprehensive informationmineralization forecast map to determine the mineralization prospect area, andpreferably prospecting targets. Depending on the ore-forming conditions,prospectingprediction unit is divided into three levels: level A(prospecting favorable>0.7),GradeB(0.7> prospecting beneficial degree>0.6), C-level (0.6> favorable prospecting> 0.5).Class A prediction unit is most favorable for prospecting, most have foundthat themolybdenum deposit (body); more obvious prediction unit B prospectingcriteria, may find that the molybdenum deposit (body); prediction unit C has acertain prospectingsigns, there is the possibility to find molybdenum deposit.7. Use of quantitative forecasting methods based on the Monte Carlo method tobequantitative evaluation of mineral resources, resource prediction, and then on theNanping area molybdenum reserves. Monte Carlo simulation and predictionestimates, Jilin Province and the Dragon Nanping molybdenum ore resources about120,000tons in the probability of60％;80％at about65,000tons, the region hasproven reserves of48,956tons, soto determine the study area is still a large number ofunknown potential ore body can be developed.In summary, the Nanping area in the east of the Helong city still has a hugeprospecting potential to explore, this study metallogenic prediction comprehensiveexploration of the study area has played a guidingrole to provide practical theoreticalbasis for further detailed investigation of evaluation.