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File:Pieces of pure iridium, 1 gram. Original size - 0.1 - 0.3 cm each..jpg

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English: 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.
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Source http://images-of-elements.com/iridium.php
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This file is available from Chemical Elements - A Virtual Museum (Jumk.de Webprojects). (images-of-elements.com). Materials from this website available via Creative Commons Attribution 3.0 Unported License.
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This file is licensed under the Creative Commons Attribution 3.0 Unported license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

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