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73Vol.7,No.319986GEOLOGICALEXPLORATIONFORNON2FERROUSMETALSJune,19983(100012)(706836500),,1998-03-02,1998-05-223,-,,250km,5km20km,[1][2],1,,(D1k22),;(D1k22),(D1k32)--2,631PbZn,Pb0.7%Zn0.15%,-,,,,:;,(),,3,,,,,,,B2,(),()()(),[3],-(),Au,4[2],,(Na2O+K2O)%3.82%5.89%,(FClS)Eu,(),,6[4],:1)-(-),2)(),3)(),4)(-),5)-(-),6),,(0.5mm5mm),5()731,,,,400m500m,2km,[5],,400m,1km(715)(500m,20m40m)(500m600m)(4321)-6-(2450m600m,1000m),[5],,[2](K2O),,;,;();:[6],,,,,7,(),()()[27]+,,;()(),,,,,880,(1981),,(1992),:831,,,,,9,()(REE),(Y.Kato,1992)(,1991)(,1987,1993),REEREE:,REE,REE;REE;REE,Eu,REE,REE10,,,,,3m12m,,30m40m:122570-,(120200),290400[2]Ca2+-Na+-K+-Mg2+-C1--SO2-4(,1990),(COC2H6H2O)11(,34S),,(1)[28],,,,,,[8]121:50000,931,,,Cd,,,PbZn,,PbZn(),[2],PbZnCu,S(),O(),O+S(,1992)SiO2,KNaCaO,:Na(1%)Al(10%)K(2.3%)TFe(9%)Ca(5%)Mg(3%)PbZn20010-6,AgCd1010-6,As50Sb20Mo7Ba60010-6:W-Co-Mo-Mn-Zn-Hg-As-Cd-Ag-Ba-Sn-Pb-Sb-AuZnMn,PbAsSbAgAu,CdMoBaNa2OAl2O3,CaOMgOTFeMn,1g.1Histogramshowingdistributionof34Scompositionsintheajorvolcanic-exhalationsedimentaryPb-Zn-CudepositsatthesouthernmarginofAltay13(),,CSAMT,,,nT,(),,(),,(TEM)(CSAMT)(200m300m)041,,,14:(1)D1k22D1k32,,,;(2),;(3)()(),;(4)(),,1,,,..,1998,7(2)2,,,,,.-..:,19953,,..:,19944..,19905,..:,19966,,..,1994,3(4)7,.-.:,19968..,1994,(1)39,..,1996,5(5)PROSPECTINGCRITERIAFORLARGE-SCALEPb-ZnDEPOSITINKEKETALEMULTIMETALOREBELT,ALTAY,XINJIANGQinKezhangZhangJinhongWangJingbin(BeijingInstituteofGeologyforMineralResources,CNNC,Beijing,100012)LiSiqiang(No.706ProspectingPartyofXinjiangGeoexplorationBureau,CNNC,Altay,836500)AbstractKeketalemultimetalorebeltisoneofthemajorpartsofAltayCu,Pb,Zn,Aumetallogenicprovince.Basedonre2gionalgeologicalsurveyandtypicaldepositanalysiswithcorrelationtothemiddle-smallsizedoredepositsinthisregion,thepapersummarizedandputforward13macroscopicalandmicroscopicalcomprehensivecriteriaformineralprospectingandassessment,suchasfavourableore-bearinghorizon,gossan,types,faciesanddifferentiationofvolcanicrocks,subvolcanicstockordyke,hy2drothermalalteration,hydrothermalsedimentaryrocks,mineralizationassociation,REE,sulfurisotope,fluidinclusionaswellasgeochemicalandgeophysicalanomalycriteriaforKeketale-stylelarge-scalePb-Zndeposit.Keywordsmultimetaldeposit;prospectingcriteria;Dovenian;Keketaleorebelt;Altay141