The mineral talc is a hydrous magnesium silicate. Its main characteristic is the shape of its crystals, which are macrocrystaline. The aspect ratio of these crystals is 11:1. It is this shape that gives unique mechanical properties to the materials it is applied, since it renders them with extreme elasticity. Talc has also the advantages of fragrance retention, luster, purity, softness and whiteness. Other important properties of talc -when used in the industry- are chemical inertness, high thermal and low electrical conductivity, high dielectric strength and oil and grease adsorption.