RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA / SCIENCE PHOTO LIBRARY RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA / SCIENCE PHOTO LIBRARY
Osmiridium, or iridosmium, is a natural alloy of osmium and iridium. It may be found naturally or man-made. Osmiridium contains about 50 percent iridium, while iridosmium contains about 70 percent. It is very rare, but can be found in mines of other platinum group metals.
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