| The syn-oreforming tectonic stress field and tectonic model for metallogenesis were established on basis of the systematic summary of structural ore controlling regularity of the fault belt and mining area, the characteristics of production of ore body,the alteration zoning regularity and the digital simulation of tectonic stress field.The regularity of content distribution and combination of microelements,the characteristics of spatial distribution of microelements, and the primary halo zoning regularity were summarized base on the study of element geochemistry. On base of ore-forming structure analysis and study of tectonic geochemistry, the metallogenic prognosis had been done.The structural ore controlling regularity of Wangershan fault: the orebody could have been formed in the hanging wall and footwall of fault,the output shape of orebody is"S"in the profiles, thinning out and reappearing, having multiple enrichment centers and the fault is deep.The structural ore controlling regularity of Wangershan mining area:there are two vein belt in plane -near SN-trending and NE-trending,the vein belt of NE-trending is SW-trending lateral trending;The orebody enriches in sections and has three mineralized enrichment sections.The tectonic stress field was NWW-compression before mineralization, NNE-compresso-shear fault was formed; NWW-tension in mineralization,the near SN and NE-trending fault opened and precipitated by the ore solution; NNW- compression after mineralization,the network permeable structure systerm was formed.There were two tensile stress concentration area in the simulating graph of tectonic stress field. The results were consistent with the lode. the stress concentration zone in southwest of graph had been found,and had not mineral exploration engineering,so it could become favorable metallogenic section.The content distribution of different elements showed that the process of alteration associated with the process of mineralization,from granite→potassic alteration→sericite-quartz alteration→silicified zones to gold ore, alteration enhanced and the main ore-forming elements (Au,Ag,Cu,Pb,Zn,As,Bi,Hg,Mo)increased.The factor analysis and cluster analysis of microelement showed that the main ore elements (Au, Ag, Sn, Bi,Co) were brought in in the metallogenic peak;The iorn group elements(Cr,Ni,V) represented the material composition of relict of Jiaodong group;The sulfide elements (Cu,As andPb, Zn,Hg) represented the material composition of superposition hydrothermal solution.The characteristics of multi-section fractal of Au showed that the multi-period mineralization,and D5 represented the content characteristics of main mineralization stage.The high value area of main ore elements Au,Ag,As were not closed in the bottom of the profile showed that the orebody had some extension in the lateral trending direction. The primary halo zoning sequence was (from front halo to rear halo): Rb,Sb1,As,Cu,Pb,Zn,Au,Ag,Mo,Bi,Sn,Co,Sb2,Ba,W,Mn,Hg2,Ni,V,Cr,Sr,the characteristic element Sb,Ba,Hg,Sr of front halo appeared in the rear halo foreshowed there was blind orebody in the deep.There were four metallogenic prognosis areas delineated; the prediction area No.1 and 2 were third and forth enrichment zone in lateral trending direction of NE-orebody, No.3 was forth enrichment zone in lateral trending direction of near SN-orebody, No.4 was two echelon veins between orebody No.23 and No.I-1.
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