1. Types of ores:
Ores can be classified based on the type of compound they contain, such as oxides, sulphides, or carbonates.
2. Galena (PbS):
Galena is the most common sulphide ore of lead (Pb). It is made up of lead and sulfur, hence classified as a sulphide ore.
3. Other ores:
Hematite (Fe2O3) and Magnetite (Fe3O4) are oxide ores of iron.
Bauxite is an ore of aluminum and is made up of aluminum oxides.