Knowledge

The main form of marble



Marble is a metamorphic rock formed by high temperature and high pressure in the Earth's crust, and the internal force of the Earth's crust has caused the change of the original rock mass. Qualitative change refers to the change of the structure and composition of the original rock, and the new rock type formed by qualitative transformation is called metamorphic rocks. Marble mainly consists of calcite, limestone, serpentine and dolomite, its main components are mainly calcium carbonate, accounting for more than 50%.

Others are magnesium carbonate, calcium oxide, manganese oxide and silica. Because marble generally contains impurities, and calcium carbonate in the atmosphere by carbon dioxide, carbide, water vapor role, but also easy to weathering and dissolution, and the surface quickly lost luster, marble general properties are relatively soft, which is relative to granite. Of course, you don't have to pay attention to this, because this geological age is calculated according to billions, and in our lifetime, this qualitative change is a limited variation.

Also known as the marble, is the recrystallization of the limestone, the main ingredient is caco₃. Limestone is softened under high temperature and pressure and crystallized to form marble when the minerals are changed. The main ingredients are calcium and dolomite, a lot of color, usually has a clear pattern, mineral particles. The hardness is between 2.5 and 5. Because marble generally contains impurities, and calcium carbonate in the atmosphere by carbon dioxide, carbide, water vapor role, but also easy to weathering and dissolution, and the surface quickly lost luster. The general nature of marble is relatively soft, which is relative to granite. In the interior decoration, the TV table, windowsill, indoor floor and other suitable for the use of marble. Marble is the name of the commodity, not the definition of petrology.