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Template:POTD/2012-09-27

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Lutetium
Pieces of sublimed dendritic lutetium, as well as an argon arc remelted 1 cm3 cube of it for comparison. Lutetium is a hard, silvery-white rare-earth metal which was discovered as an impurity in the mineral ytterbia. It is rare and expensive, and has few specific uses.Photo: Alchemist-hp