Regularities of element activities in gold-mineralizing process of the Qiuling micro-disseminated gold deposits in Zhen’an, Shannxi

Based on the element concentrations in rock and ore with identical lithology sampled in same strata,the calculation results of mass balance equation show that the transfer regular ities of element in different rock types in gold-mineral izing processes of Qiuling micro-disseminated gold deposits are dissimilar,and the mass of clastic rock are increased during the gold mineralization,while the carbonate rock suffers aloss of mass; the mineralizing fluids are acidic fluids enriched in SiO₂ and K⁺,and the gold mineralization occur in a reducing environment.