Tungsten

:This article is about the chemical element. "Tungsten" may also refer to the Tungsten Handheld PDA or to the Tungsten pickups.

Occurrence

Tungsten is found in the minerals wolframite (iron-manganese tungstate, FeWO4/MnWO4), scheelite (calcium tungstate, CaWO4), ferberite and huebnerite. Important deposits of these minerals are in Bolivia, California, China, Colorado, Portugal, Russia, and South Korea (with China producing about 75% of the world's supply). The metal is commercially produced by reducing tungsten oxide with hydrogen or carbon.

Related Topics:
Mineral - Iron - Manganese - O - Scheelite - Calcium - Ferberite - Huebnerite - Bolivia - California - China - Colorado - Portugal - Russia - South Korea - Carbon

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