wolfram

A native tungstate of iron and manganese. Its color is generally a brownish or grayish black, and it has a reddish-brown streak.

The metal tungsten or wolframium: an improper and now uncommon use.

Same as wolframite.

same as tungsten.

wolframite

tungsten

a heavy grey-white metallic element; the pure form is used mainly in electrical applications; it is found in several ores including wolframite and scheelite