Tungstates and Molybdates

The minerals that make up this class are composed of either tungsten or molybdenum or a mixture of both in combination with a metal.

Tungstates are very important industrial minerals yielding tungsten metal, which when alloyed with iron, produces strong corrosion-resistant steel. The metal is also used extensively in the manufacture of filaments for light-bulbs and vacuum tubes. Molybdates are also important ores that are used as an alloy in stainless steel to make it stronger and more highly resistant to heat.

Minerals

Scheelite
Wolframite
Wulfenite

Mineral Photos courtesy of R.Weller/Cochise College