In this study, a two-stage atmospheric leachingAtmospheric leaching method was utilized to extract copperCopper (Cu) and goldGold (Au) from a goldGold-bearing oxide copper oreCopper ore. Acidic leachingLeaching using sulfuric acidSulfuric acid (H2SO4) was initially employed to selectively extract copperCopper, followed by alkaline leachingLeaching using sodium thiosulfate (Na2S2O3) to extract goldGold from the solid residue. Various parameters were studied to achieve optimum leachingLeaching conditions, these include the effects of sulfuric acidSulfuric acid concentration, temperature, and time for enhanced copper extractionCopper extraction, while concentrations of thiosulfate, ammonia, and copperCopper ions as well as time were investigated for optimized goldGold extractionExtraction. The optimal copper extractionCopper extraction of 96% was obtained within 120 min of leachingLeaching at 60 °C with a sulfuric acidSulfuric acid concentration of 0.5 M. Subsequently, in the investigation of ammoniacal thiosulphate leachingLeaching to extract goldGold from the residue, optimal conditions were found when using a mixture of thiosulfate, copperCopper sulfateSulfate, and ammonia at concentrations of 0.4 M, 0.04 M, and 0.5 M, respectively. A goldGold extractionExtraction rate of 90% was achieved after 24 h of leachingLeaching at room temperature.