Abstract: The statistical results of typical Au, Ag deposits reveal that the relativity between gold and silver elements（RGSE）of altered rocks plays a role of indicating the mineralization type of deposit.When RGSE is high, both Au and Ag can have a content required for economic ore bodies while RGSE is low, only Au or Ag can be of economic significance.The theoretical and practical analysis indicates that the differentiation of Au from Ag may result from their difference in geochemical properties, primary rock formation characteristics and the origin and evolution of the hydrothermal fluids.RGSE can better reveal the superposition of multi-phases of mineralized fluids than Au/Ag ratio.It is of guidance significance to the application of RGSE to infer the potential mineralization type of deposits, to the exploration for reserve expansion of the existing mines and to the resource comprehensive utilization.

Key words: Au-Ag relativity, Differentiation, Mineralization type, Resource forecast