Development of approaches to the creation of technology for extracting "invisible" gold from the ores of the Sukhoe deposit (Primorye)

In the south of Far East, a large deposit Sukhoe gold has been identified, where noble metal is in dispersed form, being present form microscopic particles, or entering structure sulfide minerals. It was found out that «invisible» (nano) finding mainly associated with pyrite and arsenopyrite. To develop technology for extracting useful component, completeness convenience opening stone material transfer all components into solution crucial. The article presents results study possibility preparing samples mineral raw materials analytical determination elemental composition by thermal treatment mixture ammonium hydrodifluoride NH4HF2 sulfate (NH4)2SO4. Based on comparative analysis, it shown when using sulfate, possible to more fully open compared only hydrodifluoride. A (NH4)2SO4 recommended as new promising reagent decomposition ores "invisible" gold.