![]() Both metals are used together in electrode coatings able to withstand the very. The element, with an atomic weight of 77, is the second densest element (second only to osmium). However, because the Earth’s core is rich in iridium, other scientists argue that iridium came from volcanic origin. Iridium and ruthenium are used together in several industrial chemical. Iridium metal is a precious metal in the transitional metal section of the periodic chart. Many scientists believe that iridium originated from an asteroid or comet that was the cause of the extinction of the dinosaurs. It is silvery-white and it is notable for being the most corrosion. The Newest Precious Metal In Fine Jewelry. Iridium is a hard, brittle, lustrous, dense, transition metal of the platinum family. This time period that marks the temporal border between the Cretaceous and Tertiary eras in geological time was identified by a thin layer of clay that contained an abnormally high level of iridium. The world's only maker of 99.999 pure iridium rings, wedding bands, and luxury jewelry. Like platinum, it is a white metal, though with a glint of yellow. Iridium is a very hard, brittle and dense metal that belongs to the platinum group. It is found uncombined in nature in sediments deposited by rivers. The KT extinction event was a period over 65 billion years ago that marked the extinction of many forms of life such as, most popularly, the dinosaurs. Iridium is one of the rarest elements on Earth. Iridium salts vary widely in color, which is why iridium was named after the Latin word for rainbow: iris. They all have similar properties and often naturally occur in the same. Iridium is used as a hardening agent for platinum and for making tools that are exposed to high temperatures, like crucibles. Platinum is one of six platinum-group metals (PGM) that also includes ruthenium, rhodium, palladium, osmium, and iridium.
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