Geochemical characteristics and genesis of the skarn type fluorite deposit in Fengshan-Chibanchang,Southwest Fujian Province
The fluorite in Fengshan-Chibanchang mining area in southwestern Fujian Province mainly is mainly produced in the contact metamorphic zone.It discusses the genesis,metallogenic materials,and fluid sources of the deposit on the basis of the rare earth elements,hydrogen and oxygen isotope in fluorite.The REE distribution patterns and La/Ho-Y/Ho relationship diagram of fluorite show that the ore-forming fluid of Fengshan-Chibanchang fluorite ore body comes from the same fluid system,with stable and single source of ore-forming material,which is contemporaneous mineralization.The similar Sm/Nd ratio and negative Eu and Ce anomalies of REE characteristics between fluorite and granitic wall rocks indicate that there is a very close relationship between fluorite mineralization and monzonitic granite body.Combined with the results of hydrogen-oxygen isotopes of fluid inclusions in fluorite,the study area is a mixture of magmatic water and meteoric precipitation,ore-forming elements F and Ca were mainly derived from late jurassic biotite monzonitic granite wall rock and middle permian marine carbonate rock of Qixia formation.It belongs to a low-temperature hydrothermal filling type fluorite deposit controlled by structure during post-magmatic stage.
skarn type fluorite depositrare earth elementhydrogen and oxygen isotopesdeposit genesisFengshan-Chibanchang
万方数据
维普
