Rh, Rhodium Ore Mineral Analysis

Rhodium is a highly reflective, corrosion and oxidation-resistant metallic element in silver-white color. It is considered the rarest and most precious metal in the world (well above gold and silver). It is solid at room temperature. It has a high degree of melting (2000 degrees). The boiling point is around 3700 degrees.

It is one of the six platinum group metals (platinum, palladium, rhodium, osmium, iridium and ruthenium) and is the rarest of them. Generally rhodium is formed with platinum deposits and is commonly obtained after platinum mining and refining processes. After a series of chemical reactions, platinum and palladium are removed from the platinum ore sample.

The most common use of rhodium are catalytic converters designed to clean vehicle emissions. Rhodium generally clears emissions by reducing nitrogen oxide in the exhaust gas along with palladium or platinum. Without rhodium catalysts, air in cities would be much worse because of vehicle exhausts. Also, platinum alloy is used for aircraft turbine engines.

Rhodium is quite shiny and resistant to smudging. With this feature, jewelry is used in projector production and as a coating material for mirrors. In addition, rhodium is used in the production of optical fibers and crucibles and in the coating of headlights.

Rhodium has low electrical resistance and is highly resistant to corrosion. For this reason, it is also used in electrical and electronic devices.

Rhodium is usually made of platinum and iridium alloy to obtain a metal resistant to high temperatures and oxidation. These alloys have a wide range of uses.

Rhodium is essentially non-toxic, but some compounds are toxic and carcinogenic.

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