Rock Gold Ore (Vein Gold Ore) Beneficiation

One of the most common gold deposits is found in quartz veins. Gold-bearing quartz veins are formed when gold is rich in hydrothermal fluids, usually associated with mineral-rich hot fluids, and are deposited in cracks in the earth’s crust. Over time, these fluids cool and gold particles precipitate out and accumulate in the quartz veins. Quartz veins are usually mined for gold using underground or open pit mining methods, and then concentrated using gravity or flotation, CIP, CIL and other rock gold beneficiation methods.

Placer gold deposits Beneficiation

Placer deposits are another common type of gold deposit. Placer deposits are formed when gold is eroded from its original source rock and transported by water flows such as rivers and streams. Gold particles are deposited in river beds, sandbars or other areas of low-energy flow and accumulate over time. Placer deposits can be found in rivers, streams, flood plains and beach sands and are typically mined using placer mining methods such as panning, washing and dredging, followed extracting placer gold by gravity separation.

Associated gold deposits Beneficiation

Unlike primary gold ores, associated ores often contain gold in a complex matrix along with other minerals such as copper or sulfides. This requires a more complex processing method, with the goal shifting from simply separating gold to effectively separating gold while maximizing the recovery of associated metals. Depending on the mineral composition contained, gravity separation, flotation or magnetic separation are often used in combination for concentrating the ore.