Minerals
Minerals are inorganic compounds. This means that they retain their chemical structure regardless of exposure to air, heat or other elements. There are two types of minerals: Major (essential) minerals (sometimes called macronutrients) and micronutrients. Major minerals are classified as those needed in amounts of 100 milligrams or more per day and include: Calcium Potassium Phosphorus Sodium Chlorine Magnesium Sulfur Micro-minerals (required less than 100 mg per day) include: Iron Zinc Iodine Chromium Selenium Fluorine Molybdenum Copper Manganese.