Marble is a metamorphic rock composed primarily of calcite or dolomite minerals. It forms from the metamorphism of limestone or dolomite, which are sedimentary rocks primarily made up of calcium carbonate. The process of metamorphism involves heat, pressure, and chemical processes that alter the mineral composition and texture of the original rock.

Typically has a crystalline texture, meaning it consists of interlocking crystals. The size of the crystals can vary, from fine-grained to coarse-grained, depending on the conditions of metamorphism. Marble comes in a wide range of colours, including white, grey, black, pink, green, and brown. The colour is influenced by impurities present during metamorphism, such as clay, silt, sand, iron oxides, or organic material.

Overall, marble’s geological properties make it a fascinating material with diverse applications and aesthetic appeal. Its formation through metamorphism provides insights into Earth’s dynamic processes over millions of years.