bauxite
baux.ite \'bo.k-.si-t, 'ba:k-\ \bo.k-'sit-ik, ba:k-\ n [F bauxite, fr. Les Gaux, near Arles, France] : an impure mixture of earthy hydrous aluminum oxides and hydroxides that commonly contains similar compounds of iron and occas. of manganese, usu. has a concretionary or oolitic structure, and is the principal source of aluminum - baux.it.ic aj