Explanation

Coordination type chloride minerals. The chemical formula is NaCl. It often contains impurities such as bromine, rubidium, cesium, strontium, mud and organic matter. Equiaxed crystal system. space group Fm3m. crystal are mostly cubic, and aggregates are usually granular or massive, sometimes columnar, fibrous, hairlike, salt bloom, etc. The Dabuxun Salt Lake in the Qaidam Basin of China is rich in white, translucent spherical halite, called pearl salt. Pure ones are colorless and transparent, containing different impurities and can be dyed into various colors. glass luster, weathered surface or deliquescence shows grease luster. The cleavage is parallel {100} completely. Shell like fracture, brittle in nature. Mohs hardness 2, density 2.1~2.2g/cm 3。 Has weak conductivity and extremely high thermal conductivity. Easy to dissolve in water, has a salty taste, and is prone to deliquescence. It is mainly produced in arid inland basin salt lakes, isolated from sand. It is an important raw material for manufacturing glass, siliceous refractory and ceramics.

Classification