Mineral salts are simple inorganic substances made of metallic chemical elements, like iron, sodium, potassium, calcium and magnesium, or of nonmetallic elements, like chlorine and phosphorus.
They can be found in non-solubilized form, as part of structures of the organism, like the calcium in bones. They can also be found solubilized in water, as ions: for example, the sodium and potassium cations within cells.
