Minerals are naturally occurring inorganic solid substances that have a (more or less) definite chemical composition and characteristic physical properties. There are several types of minerals and they are used for many purposes. Three ways that minerals are used are; (i) in the production of agricultural fertilizers (phosphate rock, potash and lime), (ii) in the production of coins and jewelry as well as electronic components (copper) and (iii) in the production of ceramics, fiber glass and detergents (boron).