-Pt- is a chemical element with atomic number 78. It’s name is derived from the Spanish term platina del Pinto, which is literally translated into "little silver of the Pinto River." Platinum is a dense, malleable, ductile, precious, gray-white transition metal. Even though it has six naturally occurring isotopes, platinum is one of the rarest elements in the Earth's crust and has an average abundance of approximately 0.005 mg/kg. Platinum occurs in some nickel and copper ores along with some native deposits, mostly in South Africa, which accounts for 80% of the world production.