FLUID INCLUSION EVIDENCES IN THE PROCESSES AND ENVIRONMENTS OF GOLD DEPOSITION

Fluid inclusions, trapped in the ore and gangue minerals, are fossil fluids of ancient mineralized hydrothermal systems.Fluid inclusion data,including temperature,pressure,salinity,density,composition etc.,can be used as a constraint to help understanding the processes and environments of ore deposition.This paper reviews fluid inclusion data in mesothermal lode,epithermal,Carlin-type,porphyry and skarn gold deposits.Fluid inclusion petrography,homogenization temperature,decripitation temperature and composition,particularly gaseous composition,can be applied in both regional and local exploration programs for gold.