Wolframite is a mineral composed mainly of iron, manganese, and tungsten. It is an important ore for extracting tungsten, a metal known for its high melting point and strength. Wolframite typically appears in dark, metallic-looking crystals and is found in granitic and metamorphic rocks. This mineral is often associated with other tungsten-bearing minerals, such as scheelite. Wolframite is primarily mined in countries like China, Portugal, and Bolivia, where it is extracted for use in various applications, including electronics, military equipment, and light bulb filaments.