Recovery of Gold from a Free-Milling Ore by Centrifugal Gravity Separator
4. CONCLUSION The mineralogical analysis of the Mastra gold ore has shown that gold occurs as associated with quartz and sulphide minerals, and as particles of 1-300 μm in size. The gold particles, having a size of ≥150 μm, were estimated to be 50% of the gold present in the ore, indicating its potential for gravity recovery.