This article introduces some methods of ore-forming fluid s geochemical tracing.With the isotope geochemical tracing method,one may trace the sources of minerogenesis and diagenesis, and infers to the geochemical feature of the sources.With using the isotope s similar chemical property,on the other hand, one may trace the physicochemical condition and evolved process of minerals with isotopic fraction law and isotopic comosition of minerals when they begin to form.Here we mainly talk about the isotopic tracing of H,O,C,Si,Cl,Pb,Sr,B,Re-Os,Lietc.Rare earth elements are produced by mantle melting,basalt melting , ssimilation,differentiation,the interaction between carbonatite and H2O and CO2.They are also good tracer used to study immiscibility fluid.Other trace elements are also very important to trace the geochemical process of diagenesis and depositing.
The study of fluid inclusion has become the important method by which people obtain the infromation on fluid acting process and fluid property evolution because one may get the sources of mineralizing fluid,fluid s physicochemical parameters,fluid s thermal and dynamic process.Recently,with the noble gas isotope tracing, it has become a new trend of geochemical research.It is important to identify the source of oil,natural gas,and hydrothermal fluid.