| Noun | 1. | bauxite - a clay-like mineral; the chief ore of aluminum; composed of aluminum oxides and aluminum hydroxides; used as an abrasive and catalystatomic number 31, gallium, Ga - a rare silvery (usually trivalent) metallic element; brittle at low temperatures but liquid above room temperature; occurs in trace amounts in bauxite and zinc ores mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition gibbsite - white crystalline mineral consisting of aluminum hydroxide; a constituent of bauxite and a source of alumina | |