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Osmium is found in ores containing the Platinum Group Metals. (PGMs)

The largest known occurrence of Osmium is Turkey with known reserves of circa 125,000 tons followed by Bulgaria with circa 2500 tons.

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• Iridium is a stable metal that rarely reacts chemically.

• Iridium is the most corrosive resistant of all metals.

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Iridium is a silvery white Platinum Group Metal (PGM).

It has the chemical symbol Ir.
 

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Approximately 50% of total world demand comes from the electronic industry and about 40% from the chemical industry.
 

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Ruthenium is another Platinum Group Metal (PGM) along with

• Platinum
• Rhodium
• Palladium
• Osmium
• Iridium 

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South Africa is the principal producer of Rhodium and accounts for approximately 80% of the total annual production followed by Russia. Sources are also located in Canada and North and South America.
 

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The principal use of Osmium is in combination with other metals in the Platinum Group Metals (PGMs) to produce extremely hard alloys.

One such use is in armour piercing shells.

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Osmium is a shiny silvery-bluish grey brittle metal in the Platinum group of metals.

The chemical symbol for Osmium is Os.

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Did You Know?

that Rhodium is historically circa six times more expensive than Gold
 

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•      Rhodium is a hard, silvery and durable metal in the Platinum group.
•      The Chemical symbol for Rhodium is Rh.
•      Rhodium is highly  reflective and is often used to give white gold an extra shine
•      It has a higher melting point than Platinum and is resistant to corrosion. 
•      Like Platinum it is a hard, ductile, malleable and is a good electrical conductor.
•      Rhodium resists attack by acids and can only be dissolved in aqua regia, a highly volatile mix of concentrated nitric and sulphuric acids that is also one of the few substances that can dissolve gold and platinum
•      It is the most expensive of all precious metals.

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