SALT Common salt is a naturally occurring mineral, which is mostly made of sodium chloride, NaCl, and a few impurities.Salt is essential for the proper functioning of the human body.Salt in its inorganic form is found primarily in sea water. It is also found in meats, dairy and animal products and not so much in vegetable products. Common salt is a mineral composed primarily of sodium chloride (NaCl), a chemical compound belonging to the larger class of salts; salt in its natural form as a crystalline mineral is known as rock salt or halite. The sodium is a metal and chloride a halogen 40% sodium and 60% chloride they come together and ...