Home – Home – Jornals – Russian Geology and Geophysics 2002 number 3

Insoluble carbonaceous substance (ICS) encountered in the Sukhoi Log gold deposit was extracted, using special techniques, from bitumen-free shales. Of two groups of ICS concentrators one is light and buoyant in water, platinum-free, and containing a sericite-carbonaceous component (carbon, silicon, aluminum, and magnesium); the other group of ICS concentrators contains carbon and platinum in the ranges of 42.2 to 91.78 and 80 to 1500 ppm, respectively. The presence of platinum may attest to strong bonds between platinum and carbon and their compounds making the Sukhoi Log ores difficult to investigate. In experiments, carbonaceous substances increase their activity on thermal and acid treatment, which may be effectuated in nature as hydrothermal ore formation.