Template:Potd/2013-12-15 (en)
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This is the English translation of the Picture of the day description page from 15 December 2013.
Pure (99.9 %), argon arc remelted hafnium-ingots with visible crystalline structures. View of the front- and backside. Colors are a thin film effect in the oxide layer. The metal piece-photo was taken on a white glass plate.
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