Wolframite

Wolframite is a mineral that is an iron tungstate. Wolframite is the most important ore of Wolfram and has been used since the Middle Ages as a Wolframite source. Wolframite occurs in Wolfram deposits around the world. Deposits Wolframite typically Wolframite contains quartz, Wolframite feldspar, Wolframite, and other minerals. The name “Wolfram” comes from the Wolfram German word “wolf,” which means “tungsten.” The element name “tungsten” comes from the Swedish word “tung sten,” which means “heavy stone.” Tungsten is a very dense metal and is one of the heaviest known elements. It is also one of the hardest metals. Tungsten has a high melting point and is used in Wolfram lamp filaments and in Wolfram steel alloys. Wolframite is not radioactive.