Where does rhodium occur in nature?
The primary sources for rhodium are in Russia, South Africa, and Canada. The industrial extraction of rhodium is complicated by the fact that it occurs naturally with numerous other native ores. Mixed with other metals such as platinum, silver and nickel, the separation and refinement of rhodium ores are quite expensive. Only about 9-10 metric tons are produced annually worldwide. As of this writing, its trading range on the world spot metals market are quite volatile. The costs per troy ounce of rhodium range between $400-$1100.