Marble is a metamorphic rock that forms when limestone or dolomite is exposed to high temperatures and pressures
. The calcite in the limestone recrystallizes, creating a denser rock composed of interlocking calcite crystals
. Marble mainly consists of calcium carbonate $$CaCO_3$$
. Marble is characterized by a granular, non-foliated (unlayered) texture, though there are exceptions
. Pure marble is typically white, but impurities can result in a variety of colors
. Marble is hard and has strong wear resistance, making it suitable for building and sculpture
