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tungsten

A hard, brittle, white or gray metallic element. Symbol, W. Also known as wolfram. Found combined in certain minerals such as wolframite, (Fe,Mn)WO4; scheelite, CaWO4; huebnerite, MnWO4; and ferberite, FeWO4. Tungsten and its alloys are used extensively for filaments for electric lamps, electron and television tubes, X-ray targets, and numerous space missile and high-temperature applications.

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