NON-TRADITIONAL METHOD OF TYPIFICATION OF ORES OF GOLD-SILVER DEPOSITS (ON THE EXAMPLE OF THE MNOGOVERSHINNOE DEPOSIT, LOWER PRIAMURYE)

A new non-traditional method of attack of one of the laborious problems in ore geology - typification of ores at gold-silver deposits - is based on the integral analysis of the scientific (mineralogical) and prospecting (geochemical) data. The use of the method at the Mnogovershinnoe deposit made it possible to establish that the lower levels of the industrial mineralization are composed of gold-sulfosalt-sulfide ores (Au: Ag - 1: 0,5 - 1: 13.6). Up the dip they are changed by gold-sulfide ores (Au: Ag - not less than 1:0.5) that are replaced by gold-telluride-sulfide ores (Au: Ag - 1: 0,5 - 1: 3), and the latter grade into telluride-sulfide ones (Au: Ag - 1: 3 - 1: 10). In the Glavnaya vein-metasomatic zone, 78% of Au and 65% of Ag reserves that were prospected by the beginning of the deposit development were related with gold-sulfide ores. In the Promezhutochnaya less eroded zone, the main type of ores was gold-telluride-sulfide one (59,5% of Au and 49,2% of Ag reserves).