Element Migration Behavior And Its Significance Of The Xishan Mine Paragraph,Jiaodong Exquisite Gold Field

Linglong gold deposit is the important gold concentrated area,the rock masses in the mine area are mainly granite,and most of the area is covered by quaternary.Mineral veins are controlled by Linglong fracture,from mining to fresh all appear symmetry of horizontal zoning characteristics along veins on both sides of the surrounding rock,in order of the gold vein-beresite,cataclastic beresite-phyllic rock-potassium granite-potassium,silicide granite-fresh biotite granites.Quartz vein gold deposit and alterated rocks type deposit mainly occur in the ore body.Ore building is the Linglong biotite granite rock mass.A large quanty of samples were systematically collected based on the summary of pervious research findings and a thorough and meticulous field geological survey was carred out,and main element analysis and trace element analysis of 56 elements were also made.Through the study of rare earth elements in two altered profiles,found that the distribution of rare earth elements in altered rocks curve is basically the same in terms of form,show the LREE basically flat,MREE slightly to the right,HREE basically flat,without cerium europium anomaly characteristics.This shows that the rare earth element in the process of rock alteration,there was no obvious differentiation phenomenon.Studying the variety of elements content in the alteration profiles and comparing them with those in the fresh Linglong biotite granite,we find that TFe2O3,MgO,P2O5,Au,Ag,As,Bi,Cu,Pb,Cd,Zn,Cr,Co,Ni,P and B are enriched and Na2O,CaO and Sr are lack.During the hydrothermal ore-forming elements the Hg is enriched in quartz sulfide of the fault,high temperature metallogenic element W,Sn,Mo concentration near the fault on the plate position,low temperature in the metallogenic elements Au,Ag,As,Sb,Cu,Pb,Zn,Cd enriched near the fault footwall.PingTai method is used to determine the inactive element are calculated mass migration into the element in the alteration process of Rb,B,Pb,Bi,Zn,Mo,Ta,out of the elements are Cu,Mn,Cr,Nb,Sr,Sc.Comprehensive the change of element content in the profile(ratio method)and mass balance calculation results can determine Au,Ag,As,Sb,Hg,Cu,Pb,Zn,Cd,Sn,W,Mo,Bi,B,Rb can serve as ore-forming indicator elements in the Linglong gold mining area.