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77 Ir Iridium

Transition metal, mass: 192.22 u, 2 stable isotopes (191, 193), abundance rank (earth/space): 80/56

Click image to magnify. Pieces of pure iridium, 1 gram. Original size: 0.1 - 0.3 cm each.
Iridium Iridium pieces
Iridium is a very hard, heavy, rare and expensive silvery metal and the most noble of all metals. It hardly reacts, but as a fine powder it is flammable. It is used is special alloys and as a catalyst. The meteorite, which 65 million years ago played a key role in the extinction of the dinosaurs, contained relatively much iridium. This can still be observed in sediment layers from this time.

Iridium brighter image



Creative Commons License The images are licensed under a Creative Commons Attribution 3.0 Unported License, unless otherwise noted. Attribution by linking (outside of the internet credit with url) to the according element page.


Page last changed on February 27. 2010

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