Introduction
Marble, also known as marble, is a recrystallized limestone with the main component CaCO3. Limestone softens under high temperature and high pressure and recrystallizes to form marble when the minerals are changed. There are many colors, usually with obvious patterns and many mineral particles. The Mohs hardness is between 2.5 and 5. Marble is mainly composed of calcite, limestone, serpentine and dolomite. Its main component is calcium carbonate, accounting for more than 50%. Marble is generally soft in nature, as opposed to granite.