Platinum is named from the Spanish platina, silver and was discovered in 1735. The metal was used by pre-Columbian indians. Platinum occurs native, along with small quantities of iridium, osmium, palladium, ruthenium and rhodium, all belonging to the same group of metals. These are found in deposits in the Ural mountains, Columbia and certain western U.S. states. Sperrylite is a source of a large amount of the metal. Platinum is a beautiful silvery-white metal, when pure, and is malleable and ductile. The metal is used extensively in jewelry, wire and vessels for laboratory use. It is also used in other high temperature applications such as coating missile nose cones and jet engine fuel nozzles. It is used as a catalyst in fuel cells and in antipollution devices for automobiles.