Rock samples are pieces of rock collected for study and analysis. They help scientists understand the composition, structure, and history of the Earth's crust. By examining these samples, geologists can identify different types of rocks, such as igneous, sedimentary, and metamorphic, and learn about the processes that formed them. These samples can be collected from various locations, including mountains, rivers, and quarries. Once collected, they are often analyzed in laboratories using techniques like petrography and geochemical analysis. This research contributes to our knowledge of natural resources, environmental changes, and geological hazards.