Abstract:
The issue of invisible gold in deposits has a great scientific and applied significance. The study of the nature and occurrence mode of gold makes it possible to elucidate ore formation conditions. The majority of large and superlarge deposits belong to the disseminated gold–sulfide ore type with refractory properties that hamper gold extraction by the commonly used method (e.g., cyanidation). Therefore, the study of disseminated sulfide ores fosters the elaboration of scientific principles of the technology of their processing. The invisible gold is widespread in sulfides of gold ore, massive sulfide, porphyry copper, and copper–nickel deposits. The invisible gold prevails in many mesothermal stringer–disseminated gold–sulfide deposits with minor quartz veins.
