Limestone is a sedimentary rock composed primarily of calcium carbonate (CaCO3) in the form of the mineral calcite. It often contains other minerals, such as clay, dolomite, and silic Appearance: Limestone can vary in color from white and gray to tan, brown, and even black. Its appearance can be influenced by impurities, organic materials, and the type of minerals present. Uses: Construction: Limestone is widely used as a building material for flooring, walls, and facades due to its durability and aesthetic appeal. Industry: It is used in various industries, such as cement production, where it serves as a key ingredient in the manufacturing of Portland cement. Agriculture: Limestone is used to improve soil quality by neutralizing acidity, providing essential nutrients like calcium, and promoting plant growth. Chemical Industry: It is used in the production of lime, which has applications in various chemical processes.