Minerals are naturally occurring chemical substances. They are present in earth's crust and obtained by mining. Ores are the minerals from which a metal can be economically and conveniently extracted.
Thus, bauxite (Al2O3⋅2H2O) and clay (Al2O2⋅2SiO2⋅2H2O) are minerals of Al. However, bauxite is an ore of Al as Al can be economically and conveniently extracted from bauxite.