Minerals:
1. Minerals contain a low percentage of metal.
2. Metal cannot be extracted easily from minerals.
3. Clay \(\mathrm{Al} 2 \mathrm{O}_{3} \cdot \mathrm{SiO}_{2} \cdot 2 \mathrm{H}_{2} \mathrm{O}\) is the mineral of aluminium.
Ores:
1. Ores contain a large percentage of metal.
2. Ores can be used for the extraction of metals on a large scale readily and economically.
3. Bauxite \(\mathrm{Al}_{2} \mathrm{O}_{3} \cdot 2 \mathrm{H}_{2} \mathrm{O}\) is the ore of aluminium.
