GENERAL GEOLOGY

Detailed explanation-1: -Salts that are harvested from rock deposits were formed by the evaporation of ancient seas. Rock salt can be mined directly, as shown in SF Fig. 2.7, or acquired by pumping a solvent, like water, into the deposit. Water dissolves the salt, forming a salty brine solution.

Detailed explanation-2: -One of them is common salt, when sea water is allowed to stand in shallow pits, water gets evaporated by sunlight and slowly turns into water vapor. In a few days, the water evaporates completely leaving behind the solid salts. Common salt is then obtained from this mixture of salts by further purification.

Detailed explanation-3: -The evaporation of seawater leads to the precipitation of an ordered sequence of minerals of increasing solubilities. The marine evaporite minerals are many (Table E1), but the most common are gypsum (anhydrite) and halite (Table E2).

Detailed explanation-4: -Rock salt is the name of a sedimentary rock that consists almost entirely of halite, a mineral composed of sodium chloride, NaCl. It forms where large volumes of sea water or salty lake water evaporate from an arid-climate basin–where there is a replenishing flow of salt water and a restricted input of other water.

Detailed explanation-5: -Rock Salt Discovery and History in Asia Rock salt, also known scientifically as halite, was created from the evaporation of ancient inland seas and saltwater lakes, which left concentrated beds of sodium chloride and other minerals.