Different sources, rock salt is a salt deposit formed by evaporation of brine in a closed basin, also known as halide minerals. Salt is sea salt, well salt, mineral salt, lake salt and soil salt from different sources. With different shapes, the single crystal of rock salt is cubic, and there are often stepped depressions on the crystal face of the cube, and the aggregate is often granular or massive. The unit cell of salt is face-centered cubic structure.

What is the difference between rock salt and salt?

For different purposes, rock salt is not only processed into refined salt for consumption, but also one of the most basic raw materials in chemical industry. For example, rock salt can be dried and electrolyzed to produce metallic sodium and chlorine. Salt is mainly used for seasoning.

There are differences in chemical properties. Pure rock salt is colorless and transparent. When it contains impurities, it is light gray, yellow, red and black, and it is glassy.

Pure salt is a colorless and transparent cubic crystal, and it is a white cubic crystal or a fine crystal powder when there are impurities.