Minerals are inorganic substances.
This means that they're found in the rocks and soil beneath your feet. Vegetables absorb mineral goodness as they grow and animals digest it through their diet. Minerals work together with vitamins to do good in your body. Just like vitamins, minerals can be divided into two groups - those that are needed in minute quantities and those that are needed in larger quantities. Minerals needed in tiny amounts are called trace minerals and this group includes iron, zinc, iodine, selenium and copper.