Bauxite: The principal ore of aluminum.
The United States has a few small bauxite deposits but at least 99% of the bauxite used in the United States is imported. The United States is also a major importer of aluminum metal. ... In the HallHeroult Process, the alumina is dissolved in a molten bath of cryolite ... Powdered bauxite can be fused into tiny beads at very high temperatures ...