Inorganic substances needed by the body for everyday function. Some minerals such as calcium are needed in large amounts (1000-1300 milligrams per day - also known as a macromineral). Microminerals are those minerals that are needed in much smaller amounts (<100 mg per day). Minerals are required for very specific functions in the body and it is important that you consume the recommended amounts in order for your body to function properly. Calcium, magnesium, copper, zinc, iron, fluoride, iodine, sodium and chloride are just some of the minerals needed every day.