Study On Regional Geochemical Ore Prospecting Model Of China Typical Tungsten Deposit

Tungsten mine is an dominant resource of our country. This study aims toestablish a nationwide regional geochemical prospecting model of the typical tungstendeposits by summarizing the geochemical characteristics of regional rocks and streamsediments characteristics about the21typical tungsten deposits.By collecting the geological-geochemical datas and previous assorted schemefor tungsten deposits, the21typical tungsten deposits could be classified into threetypes:granite-type tungsten deposit(19), stratabound hydrothermal-skarn-typetungsten deposit(1) and weathering crust-placer-type tungsten deposit(1). Thegranite-type tungsten deposit(19) could be classified into three subgroups: quartzvein-type(8), skarn-type(9) and rock body-type(3). Through inductive analysis aboutregional geochemical characteristics of granite-type tungsten deposit and its subgrouptungsten deposit,we make the following conclusion:The enriched elememts of rocks about quartz vein-type tungsten deposit underthe regional background are totally24elements, including W，Sn，Mo，Bi，Cu，Pb，Zn，Cd，Au，As，Sb，Li，Be，Rb，Cs，Ta，U，Cr，Co，Ni，Tl，Sc andGa. The enriched elememts of regional stream sediments are totally16elements,including W，Sn，Mo，Bi，Cu，Pb，Zn，Cd，Au，Ag，Sb，Hg，B，Be，Th andY. Regional geochemical exploration of quartz vein-type tungsten deposit indicatesthe association of ore-forming elements are W，Sn，Mo，Bi，Pb，Cd，Ag，As andLi.The enriched elememts of rocks about skarn-type tungsten deposit under theregional background are totally16elements, including W，Sn，Mo，Cu，Pb，Zn，Li，B，Rb，Cs，Nb，Ta，Th，U，Cr and MnO. The enriched elememts of regionalstream sediments are totally12elements, including Mo，Bi，Cu，Pb，Zn，Cd，Au，As，Sb，F，U and V. Regional geochemical exploration of skarn-type tungsten depositindicates the association of ore-forming elements are W，Sn，Mo，Bi，Pb，Cd，Ag and As. The enriched elememts of rocks about rock body-type tungsten deposit under theregional background are totally14elements, including W，Sn，Mo，Bi，Cu，Au，Be，Rb，Ta，U，Cr，Co，Ni and MnO. The enriched elememts of regional streamsediments are totally11elements, including W，Sn，Pb，As，Hg，B，Nb，Y，U，Zr and La. Regional geochemical exploration of rock body-type tungsten depositindicates the association of ore-forming elements are W，Sn，Bi，Cu，Cd，Au，Ag and As.The enriched elememts of rocks about granite-type tungsten deposit under theregional background are totally24elements, including W，Sn，Mo，Bi，Cu，Pb，Zn，Au，Ag，As，Sb，Li，Be，Rb，Cs，Ta，U，Nb，Cr，Ni，Co，Ga，Ge andMnO. The enriched elememts of regional stream sediments are totally13elements,including As，W，Bi，Cd，Hg，Pb，Sb，Sn，B，Ag，Cu，Mo and U. Regionalgeochemical exploration of granite-type tungsten deposit indicates the association ofore-forming elements are W，Sn，Mo，Bi，Pb，Cd，Ag and As.