Geochemical Exploration Model Of Gold Deposits In Eastern Jilin And Heilongjiang Province

Eastern Jilin and Heilongjiang province is one of the important major gold production bases in China.Three typical gold deposits are selected which include Tuan jiegou gold deposit,Jinchang gold deposit in Heilongjiang province and Jiapigou gold deposit in Jilin province.By studying three typical gold deposits in eastern Jilin and Heilongjiang province,the geological and exploration geochemical characteristics of each gold deposit are summarized,use the methods of the typical deposits geochemical modeling in the potential evaluation research of the national mineral resources,the geochemical exploration model of three typical gold eposits were established separately,then,the geochemical exploration model of the gold deposits in eastern Jilin and Heilongjiang province has been established in this paper.The auriferous strata of Tuanjiegou gold deposit is schist in the mesoproterozoic Heilongjiang group and volcanic rocks in early cretaceous ningyuancun formation.The ore body is exposed and mainly controlled by fault Structures.Mineralization is closely related to lagiogranite porphyry and silicification,mineralization ages about 102 Ma.The indicator element for prospecting in regional geochemical exploration are 4(As,Au,Li,Sb)elements in total,maybe are Hg,Be,U.The indicator elements for prospecting during rock geochemical exploration are 7(Ag,As,Au,Cr,Hg,Mo,Sb)elements in total,maybe are Cd,F,U.In the Tuanjiegou gold deposit,the universal indicator elements for prospecting are 4(As,Au,Hg,Sb)elements in total.The auriferous pluton of Jinchang gold deposit is intermediate-acid intrusions in the Yanshanian Period and Indosinian period.The ore body is exposed and mainly controlled by faults tructures.Mineralization is closely related to granite porphyry,mineralization ages about 113 Ma.The indicator element for prospecting in regional geochemical exploration are 10(Ag,As,Au,Bi,Cu,Hg,La,Mo,U,Y)elements in total,maybe are Cd,Pb,Sb,Zn.The indicator elements for prospecting during rock geochemical exploration are 12(Ag,As,Au,Bi,Co,Cu,Hg,Mo,Pb,Sb,W,Zn)elements in total,maybe are B,F,Sn.The universal indicator elements for prospecting are 10(Ag,As,Au,Bi,Cu,Hg,Mo,Sb,Pb,Zn)elements in total.The auriferous strata of Jiapigou gold deposit is schist,gneiss and quartzite in the Neoarchean Jiapigou group.The ore body is exposed and mainly controlled by fault structures.Mineralization is closely related to granitoid plutons,mineralization ages about 178 Ma.The indicator element for prospecting in regional geochemical exploration are 9(Ag,Au,Bi,Cu,Hg,Mo,Pb,Sr,W)elements in total,maybe are B,Ni.The indicator elements for prospecting during rock geochemical exploration are 12(Ag,Au,Bi,Co,Cu,Mo,Ni,Pb,Sb,Sr,W,Zn)elements in total,maybe are Be,Cd,F,Li,Sn.The universal indicator elements for prospecting are 9(Ag,Au,Bi,Cu,Mo,Ni,Pb,Sr,W)elements in total.The universal indicator elements for prospecting gold deposit in eastern Jilin and Heilongjiang Province with similar geological background are 8(Ag,As,Au,Bi,Cu,Hg,Mo,Pb)elements in total.