Description: Smelting Platinum, PLATINUM Documentary: Mining, Science and History, Platinum Smelting, Smelting Platinum/Palladium Catalytic Converters For PGMs..... Success???, Platinum Refining Complete Process by Sreetips
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Platinum is a chemical element with symbol Pt and atomic number 78. It is a dense , malleable , ductile , highly unreactive, precious , gray-white transition metal . Its name is derived from the Spanish term platina , which is literally translated into "little silver".
Platinum is a member of the platinum group of elements and group 10 of the periodic table of elements . It has six naturally occurring isotopes . It is one of the rarer elements in Earth's crust with an average abundance of approximately 5 μg /kg. It occurs in some nickel and copper ores along with some native deposits, mostly in South Africa , which accounts for 80% of the world production. Because of its scarcity in Earth's crust, only a few hundred tonnes are produced annually, and given its important
Platinum is the least reactive metal . It has remarkable resistance to corrosion , even at high temperatures, and is therefore considered a noble metal . Consequently, platinum is often found chemically uncombined as native platinum. Because it occurs naturally in the alluvial sands of various rivers, it was first used by pre-Columbian South American natives to produce artifacts. It was referenced in European writings as early as 16th century, but it was not until Antonio de Ulloa published a report on a ne