Sulfides are chemical compounds that consist of sulfur combined with one or more metals or nonmetals. They are often found in nature as minerals, such as pyrite (fool's gold) and galena, and can also be produced through industrial processes. Sulfides are important in various applications, including mining and metallurgy, as they can be sources of valuable metals like copper and zinc. In addition to their industrial significance, sulfides can have environmental impacts. When sulfide minerals are exposed to air and water, they can undergo oxidation, leading to the formation of acid mine drainage. This acidic water can harm aquatic ecosystems and contaminate soil and groundwater, making the management of sulfide-rich materials crucial in mining operations.