The uses and values ??of calcite are as follows:

1. The uses of calcite:

Calcite is one of the most important rock-forming minerals in the earth's crust, and its main component is CaCO3 . Calcite has various crystal shapes and is the main mineral in limestone, marble and stalactites. Calcite is used as a solvent in the metallurgical industry; in the construction industry it is used to produce cement and lime; it is also used in plastics, paper, and toothpaste. Used as filling additive in food. When calcite is added to glass production, the resulting glass becomes translucent, making it especially suitable for glass lampshades.

2. The value of calcite:

1. It can filter air odor and is a famous "aroma master". Can be used to improve the smell and energy in the environment.

2. Place raw stones in cars, kitchens, toilets, cabinets and other places with odors. Is an expert in deodorizing.

Introduction to the composition and properties of calcite:

1. Calcite composition

The main component of calcite is calcium carbonate, with a chemical composition of 56.03% CaO and 43.97% CO2. %, often containing homotropic substitutes such as Mn, Fe, Zn, Mg, Sr; when they reach a certain amount, they can form manganese calcite, iron calcite, zinc calcite, magnesium calcite and other variants. In addition, mechanical inclusions such as brucite, dolomite, iron hydroxides and oxides, sulfides, and quartz are also commonly found in the crystals.

2. Properties of calcite

Ordinary calcite is white or colorless. Because it contains other metal color elements, it can show light red, light yellow, light tea, rose red, purple, etc. color; completely transparent to translucent; hardness 2.704~3.0; specific gravity 2.6~2.8g/cm3; melting point 1339℃; decomposes into CaO and CO2 between 830~1020℃; reacts with dilute acid and releases carbon dioxide at the same time. Thermal reaction; also soluble in ammonium chloride solution, almost insoluble in water.

For the above content, please refer to Baidu Encyclopedia—Calcite