Coltan, short for columbite-tantalite, is a metallic ore primarily composed of tantalum and niobium. It is a highly valuable mineral used in the production of electronic devices such as smartphones, laptops, and tablets. Coltan is found in several regions around the world, with significant deposits located in countries like the Democratic Republic of the Congo, Australia, and Brazil. The mining and trade of coltan have been controversial due to ethical concerns related to human rights violations, environmental damage, and exploitation of local communities. The demand for coltan continues to rise as technology advances, leading to ongoing challenges in regulating its extraction and ensuring responsible sourcing practices.