Mineral salt refers to naturally occurring inorganic compounds that are composed of minerals and are typically found in crystalline form. These salts are essential for various biological processes and are commonly used in food preservation, seasoning, and as dietary supplements. Examples include sodium chloride (table salt), potassium chloride, and calcium carbonate. Mineral salts play a crucial role in maintaining the body's electrolyte balance, which is vital for nerve function and muscle contraction. They are also important for hydration and can be found in many natural sources, such as seawater and mineral-rich springs.