Sulphides are chemical compounds that consist of sulfur and one or more metals or nonmetals. They are often found in nature as minerals, such as pyrite and galena, and can also be produced through various industrial processes. Sulphides play a significant role in geology and mining, as they can indicate the presence of valuable metals. In addition to their geological importance, sulphides are also relevant in environmental science. They can form in anaerobic conditions, leading to the production of hydrogen sulfide, a gas that can be toxic in high concentrations. Understanding sulphides is crucial for both resource extraction and environmental management.