👉 Limestones are a type of sedimentary rock that is composed primarily of calcium carbonate, which gives it its distinctive white or gray appearance. These rocks can be found in various locations around the world and include limestone beds, which are formed from the accumulation of limestone deposits over time. Limestone is characterized by its smooth texture, smooth surface, and a high degree of porosity, which allows for the presence of minerals such as calcite (CaCO3) and dolomite (MgCO
