The Study Of Visualization Of Geology & Geophysics Model And Geostatistics Of Gold Grade Of Xiejiagou Gold Deposit

The dissertation is on the base of the theory and methods of integratedinformation exploration model and all kinds of geology prospecting data are involvedin , Including geology topographical map, sectional map, level plane figure and so on.With-SURPAC (which is the popular software of Australia Mining Industry) makedbasic statistics and classification for the geology data , created the 3D visual geologymodel of Xiejiagou gold deposit. Based on this model ,geophysical CSAMT data anddrilling section figure are overlapped to form the geology & geophysics model. In thepaper systematically analyzed the geophysical characteristics of the ore and the wallrock and explained the relationship between the abnormality and the mineralization ofgold;On the other hand ,through applying geostatistics and fractal methods,it studiedthe enrichment regulations of the gold grade of Xiejiagou deposit. The importantresult is as follows:1,The 3D visual geology model of Xiejiagou gold deposit let us moreunderstanding of the ore occurrence rules. On the model, Xiejiagou ore belt has thenorthward pitch trend, and the number of ore body is much more, in the intensealteration place, the ore body is steady and successive. The ore vein showsright-parallel tend.2,To compare with the geophysics CSAMT electrical data, the abnormality of 12sectional maps of the CSAMT data were analyzed through the 3D geology model.Four geophysical characteristics have been classified and meanwhile the potential oreabnormality were evaluated on the base of the integrated information.3, It also make the study of the geostatistics and fractal research for the goldgrade data from the geology 3D model database. The variogram,grade contour , goldgrade fractal have gotten. The nugget of grade is higher, so the gold grade is notuniformity and change more. With the calculation of variation function the 3Dvariation direction is: level plane NE30°, vertical plane 89.9°,dipping angel 0.43°.For the fractal D value,We have gotten the initiative understanding and the change ofthe fractal D value shows that the ore extends to the depth .