Characteristicsof Soilgeochemistryand Metallogenic Predictionin Baburongxilead Zinc Mine,Anduo County,Tibet

The lead-zinc polymetallic deposit inBaburongxi,Anduo county,Tibet is located in the Duocaima—Bumalangna lead-zinc-copper-molybdenum metallogenic belt in the Tuotuohe Consolidated Investigation area.The metallogenic belt has been found many mineral deposits.Through comparison,Baburongxi has a similar geological background,resource potential,especially lead-zinc and other mineralization potential.Based on the geological survey,geophysical and geochemical,according to regional geological background,combined with thegeologicalfeatures of Baburongxi and natural geographical conditions,and extensive reading of the relevant literature,the main resultsI have got are as follows:The primary process of soil geochemical data is obtained as follows: The abundance coefficient of four kinds of elements(As,Sb,Pb and Cd)is greater than 2,indicating that the four elements in the study area is rich and have good metallogenic prospect.The coefficient of variation of two elements as Ag,Pb are greater than 1 said that these two elements is not evenly distributed in the study area,becausethe discrete degree is higher the more likely tobe enriched into a ore deposits.The coefficients of skewness and kurtosis of nine elements show in the region do not accord with normal distribution,indicating the cause of abnormal types they are influenced by many geological events.Using multivariate statistical methods,such as correlation analysis,cluster analysis and factor analysis,the processing of the original data,the results show that the Pb—Sb—As—Zn—Cd as a combination of the main factor element in the study area in a good relationship with symbiotic or associated,metallogenic prospective.Sphericity test of the statistic results,as well as the rotation factor diagram have confirmed the above results of multivariate statistical analysis are consistent and reliableAccording to the soil geochemical survey results,I determined the background value and threshold by iteration method,and prepared a geochemical anomaly map,the I draw out ninesingle element anomaly map of the lead-zinc polymetallic deposit inBaburongxi,Anduo county,Tibet,anddelineated the single element anomalies andgota total of fifteen,of which threePb abnormal and seven Ag abnormal.Pb and Ag elements have obvious concentration centers,abnormal value are very high,the mineralization.On the basis of the anomaly analysis and evaluation results of single element,I drawa geochemical anomaly map ofnine elements,among which three are class B anomalies and six are class C anomalies.In addition,the analysis on the exploration of induced polarization intermediate gradient in results,mainly based on the polarizability anomalies anomaly zone three,numbered JD1,JD2 and JD3 IP anomaly,suggesting that both fault under the action of Ag—Pb in sulfide mainly caused by the results of further enrichment,and geochemical results are basically the same.There are no magmatic rocksoutcropping in the area,nor fault and fold structures have been found.The alteration and mineralization of the surrounding rock are not developed.The iron mineralization belt is located in the study area,and there are a number of geochemical anomalies in both sides.Based ontheanalysisofgeological data in the study area,and combining with the soil geochemical anomaly investigation and induced polarization intermediate gradientin the results of the work,and according totheposition oflimonitization in the study area,then I delineated a silver lead in the central part of the South as a prediction area for major metallogenic elements.And Ipreliminarily analyzed the causes of geophysical and geochemical anomalies,as a reference for further prospecting,so it has a certain theoretical significance and practical prospecting value.