
Carbon polymorph group minerals are elements which exist in more than one crystal forms. Various minerals such as graphite and diamond belong to the carbon polymorph group which are widely used in the in various industries such as agrochemicals, pharmaceuticals, and foods among others. Natural form of graphite is metallic mineral which consists entirely of crystallized elemental carbon. It is a good conductor of electricity and heat having the highest natural strength and stiffness of any material. These minerals are also some of the lightest of all reinforcing agents exhibiting high natural lubricity. As a result of the reduction of sedimentary carbon compounds during metamorphism, graphite occurs in metamorphic rocks while some graphite occurs in igneous rocks and can also be produced as a result of thermal metamorphism of coal.Graphite mineral are widely used in refractory for the construction magnesia-carbon bricks (25% graphite) for the purpose of lining steel-making furnaces. In addition, the mineral is also used in steelmaking for the purpose of carbon-raising in molten steel. Other applications of graphite include lithium-ion batteries, lubricants, and automotives, sports and marine as carbon fibered polymer composites.