Fractal Analysis of the Composition and Structure of Sulfide Disseminated Ores in Picritic Gabbro-Dolerites of the Oktyabrsky Deposit, Norilsk Ore Cluster

Ores from wells drilled in the Kharaelakh intrusive of the Talnakh ore cluster are analyzed. Vein-disseminated sulfide copper–nickel mineralization in picritic gabbro-dolerites on the eastern flank of the Oktyabrsky deposit is characterized as interstitial drop-shaped mineralization. Samples for each type of ores were examined by 3D X-ray tomography and analyzed using fractal theory. Based on the results of the study, it has been concluded that interstitial drop-shaped mineralization samples at different scales are correlated with the fractal dimension of ore minerals. The average three-dimensional fractal dimension of the X-ray tomographic phase of sulfides and minerals of the spinel group is 2.13 and the average two-dimensional dimension of sulfide mineralization aggregates alone is 1.15, which is consistent with the Mandelbrot rule of thumb, according to which the three-dimensional fractal dimension is one more than the two-dimensional one. The numerical values of the fractal dimension, which describe the segregation dynamics, can be important for the technology of concentration of new ore types from deposit flanks and serve as an additional criterion for identifying zones with the highest intensity of ore mineralization in disseminated ores during prospecting and exploration works in the Norilsk ore district.