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In this study, the amenability of Akoluk (Ordu -Turkey) ore to the extraction of gold and silver by cyanide leaching was investigated. Mineralogical analysis of the ore has revealed the presence of native gold and a variety of minerals including barite, zinkenite, stibnite, orpiment, realgar, cinnober, pyrite and sphalerite. No silver was detectable under microscope suggesting that it could be present as occluded in minerals such as fahlerz, antimonite and zinkenite. Gold particles as 1-88 $\mu$m in size were obse...

In this study, diagnostic leaching and ultrafine grinding as pretreatment step ahead of two-stage cyanidation of KaletaЕџ ore were studied to shed light on the refractory characteristics of ore. The overall gold extraction of 93\% was achieved in two-stage cyanidation of ultrafinely ground ore suggesting the presence of readily recoverable gold (74\%) and slowly reacting gold (19\%) in the ore. Diagnostic leaching approach provided information into the cause of the refractoriness of the ore. The findings of diagno...

In this study, flotation concentration of Trabzon-KayabaЕџД± Massive Sulphide ore was investigated. The effects of particle size, reagent concentration (collector and depressant) and agitation speed on the recovery of copper were studied. The results have shown that the ore responded poorly to concentration by flotation with low efficiency of seperation of copper minerals from sphalerite and pyrite. Changing the flotation conditions i.e. decreasing particle size to >99\% passing 38 $\mu$m or increasing the concent...

In this study, the geological features of the placers in the Aegean region of Turkey and possible processing options for the recovery of precious metals and industrial raw materials were examined. Industrial raw materials present in the placers and their potential for industrial uses were reviewed. A conceptual flow sheet for the production of a bulk concentrates to recover rutile, ilmenite, zircon, hematite, limonite, magnetite, cassiterite and gold contained in the placers concentrate was proposed. Quartz crysta...

Detailed geological and drilling investigations have shown KayabaЕџД± deposit, located in Trabzon-Turkey, has a resource of 590 000 tons ore containing 2.2\% Cu and 1029 kg Au. The ore body shows the characteristics of both massive- and stockworktype sulfide mineralization. In this study, mineralogical analysis and flotation tests were performed to determine the degree of liberation of sulfides and the optimum grind time for the massive ore samples. Covellite and chalcocite were identified as the main copper miner...

In this study, the recovery of barite and silver from G\"um\"uЕџk\"oy Silver Plant (Turkey) tailings was investigated using Multi Gravity Separation and cyanidation methods. Approximately 20 million tons of tailings contain 20.62\% BaSO4, 51.15\% SiO2, 11.5\% CaCO3, 3.84\% Fe2O3, 4.76\% Al2O3 and 120 g/ton silver with a particle size of 70\% passing 37 $\mu$m have been disposed of to the tailings pond in G\"um\"uЕџk\"oy SilverPlant over the years. Multi Gravity Separator (MGS) produced a concentrate containing 65....