Tantalite is a mineral composed primarily of tantalum, a rare metal used in electronics and other high-tech applications. It is often found in granite and pegmatite formations and is typically dark in color. Tantalite is important for its ability to withstand high temperatures and corrosion, making it valuable in the production of capacitors and other electronic components. The mineral is often associated with columbite, which contains niobium, another important metal. Tantalite is mined in various countries, including Brazil, Australia, and parts of Africa. Due to its rarity and demand, tantalite plays a significant role in the global supply chain for electronic devices.