1 History; 2 Types of ore; 3 Concentration; 4 Leaching; 5 Refractory gold processes; 6 Gold smelting. 6.1 History of smelting; 6.2 Mercury removal; 6.3 Iron removal ...
Gold can be found in quartz veins and ore throughout gold-bearing regions of the world. Ore is any mineral that contains enough precious metals to make it profitable ...