Minerals are inorganic elements which means that no living thing, plant or animal is able to manufacture or create them. Minerals have to be obtained externally from the food of the plant, animal or human. For plants, the minerals have to come from the soil in which they are grown. As human beings and animals cannot readily absorb minerals directly from the soil, their minerals have to come from the plants and foods they eat. There a basically two types of minerals. Metallic Minerals and Colloidal Minerals and this eBook explains their functions