The Research Of Geogas Measurement And Prospecting Methods For Uranium Polymetallic Deposit In Bamadong,Guizhou Province

With China's social and economic rapid growth in recent years,many of the main metal mineral resources and the early development of the mine have different levels of resources to crisis.Therefore,to strengthen the prospecting work in the original development of the earlier mines at the depth and adjacent area,to search replaceable resources,to extend the service life of the mine,to improve and innovateexploration technology and to find mine method research,exploring a effective method applied in deep mine prospecting with a high degree of geological work is an important trend for the current world development of mineral exploration.According to Baimadong ore deposit distribution of ore bodies,for the purpose of control areas favorable stratum lithology and tectonic,according to the basic perpendicular to the mining area in the main ore structure and the principle of horizon,the nearly north-south-trending #1,#2,#3,#4 geogas survey lines were arranged from West to East in the deep and periphery of the Baimadong deposit.A total of 236 measuring point of geogas measurement was completed.The main contents of this paper are as follows:Firstly,to the object of study area of geological background analysis,formation and periphery of the ore deposits,detailed analysis of the structure,size of uranium ore body,which prepare for later development.Secondly,through the analysis of the geogas measurement data,based on known orebody exploration line layout to geogas measuring lines to # 2,# 3,at the same time,combining with the regional geological conditions,researching to geogas measuring elements which elements have instructions for uranium,which elements to construct with indication,forming geogas ore-prospecting criteria of Baimadong uranium deposit.Thirdly,through the establishment of Baimadong deposits of geogas prospecting criteria and the unknown survey line #1,#4 line of deep ore body and buried structure prediction,it provides the basis for the region to further drilling work.The results obtained in this paper are as follows:(1)The research of #2 and #3 lines of the known orebodies in the survey area shows that gorges prospecting method is effective.By the multivariate statistical analysis and combination with the relevant geological conditions,the results also shows that the best geogas indicator elements combined Cu,Zn,As,Mo,Ni for the carbonaceous siliceous pelitic rock type uranium deposit are found,and that the element Sr for hidden fracture important instruction function are verified.(2)By the results of on line #2,#3 anomaly area and #1 line,line #4 anomaly zone and uranium ore characteristics of rare earth elements in the study showed that they all have the characteristics of a right leaning LREE enrichment type,(La/Yb)N ratio is larger,light and heavy rare earth differentiation is obvious.The Eu also presents the characteristics of the loss to a certain extent,indicating that they have certain homology.(3)The unknown Survey #1line,#4 line data processing results,divided into three anomaly zones.and through the analysis of the clustering of anomaly elements,and established in combination with the front to geogas ore-prospecting criteria and anomaly elements and statistical analysis,the characteristics of rare earth elements analysis showed that anomaly area 7 of #1 line and anomaly area 8 of #4 line are the important anomaly ore caused anomaly,which Is one of the most important prospecting targeted Abnormal 9 of #4 line is a major hidden fault zone.