Bauxite is not a mineral. It is a rock formed from a laterite soil that has been severely leached of silica and other soluble materials in a wet tropical or subtropical climate. It is the primary ore of aluminum. Almost all of the aluminum that has ever been produced has been extracted from bauxite.It is a mixture of hydrous aluminum oxides, aluminum hydroxides, clay minerals, and insoluble materials such as quartz, hematite, magnetite, siderite, and goethite. The aluminum minerals in bauxite can include: gibbsite Al(OH)3, boehmite AlO(OH), and, diaspore, AlO(OH).
Bauxite is the principal ore of aluminum.The first step in producing aluminum is to crush the bauxite and purify it using the Bayer Process.Use of Bauxite as an Abrasive and as Proppant.In 2009, Australia was the top producer of bauxite with almost one-third of the world’s production, followed by China, Brazil, India, and Guinea.