Here is a table with the main countries that produce rhodium in the world. Like other platinoids, it is mainly South Africa which produces this metal.
Rhodium is one of the rarest elements on Earth. The extraction of metal is complicated because it is often intertwined with other metals such as gold, platinum, palladium or even silver. Rhodium is a fission product of uranium 235. Rhodium is primarily used in catalytic converters in cars.
We also find rhodium in jewelry, the high reflection rate of the metal helps increase the shine of the gold. Thus the rhodium is galvanized on the white gold. The metal also serves as a coating on sterling silver (a silver alloy that contains 92.5% by weight of silver and 7.5% by weight of other metals, usually copper). This also helps prevent tarnishing (generated by silver sulfide).
Rhodium is often added to platinum or palladium to increase the anti-corrosion properties of electrical contacts, surgical instruments and other medical devices (X-ray machines for mammography for example).
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