Gold and silver in geological standard samples MGI were determined by instrument neutron activation analysis. The various interferences of nuclides were considered. Corrected factors of the geometry in different positions have been determined. Using the geological standard sample MGM and radiochemical separation neutron activation method as reference

the reliability of this method is proved. Gold content in samples is 0.4—0.009 g/t

silver content is 9—0.3 g/t. Standard deviation is less than 3.5%

the precision of the measurement is 4.8—11.6%.