Rock salt, also known as halite, is a very common mineral, with an interesting back story. Just as oil develops around natural deposits of vegetation, rock salt is often found where there was once an inland lake, which has dried up and been covered by hundreds or thousands of years of sedimentation and geological formations.
Solutions consist of ions or molecules, known as solutes, dissolved in a medium or solvent. In nature, this solvent is usually water. Many minerals can be dissolved in water, such as halite or table salt, which has the composition sodium chloride, NaCl. The Na +1 and Cl 1 ions separate and disperse into the solution.