Calcite is what composition? And limestone is not the same

Calcite is a kind of calcium carbonate mineral, the most common natural calcium carbonate is it. Therefore, calcite is a kind of widespread mineral. Calcite crystal shape varied, their aggregate can be clusters of crystals, can also be a granular, block, fibrous, stalactite, soil and so on. Rap calcite can get a lot of square pieces, therefore calcite. And limestone.

Crystal system: hexagonal system

Chemical composition: CaCO3

Sex: as one of the most important carbonate mineral, has completely rhombohedron cleavage, vitreous luster, transparent to translucent, ordinary white or colorless, also many contain other color, white streaks, 3.0 hardness, specific gravity 2.71, soluble in dilute hydrochloric acid and sparkling, pure and transparent as Iceland Spar (Iceland Spar), with a strong birefringence and complete cleavage.

Occurrence: limestone, marble, and beautiful stalactites of main mineral is calcite. In the springs can be deposited travertine, often in igneous rock is also a secondary mineral, almond cavity in basalt flows, sedimentary rock within the cracks of calcite filling and fine veins, or through the biological action, output in the form of shells or rocks.

Use: Iceland SPAR for double refraction, are often used in polarizing prism, such as cutting pillars in a certain way, but when the microscope lens, the optical properties of these detection minerals, its quality requirement shall be quoted in: colorless, transparent, internal without bubbles or crack, without a twin or distort, 0.5 inch (12.5 mm) above cubic. Calcite commonly used in chemical industry, cement and other industrial raw materials.

To: calcite can be found in the central mountains east slope of crystalline limestone, western tertiary and quaternary limestone, and featuring gold stone copper deposits.