It is a mineral belonging to the group of aluminosilicates. Kaolin found in nature usually contains different amounts of minerals such as mica, feldspar, anatase and quartz. In its natural state, kaolin is a soft, white powder composed of hexagonal, crystalline kaolinite minerals, usually measuring between about 0.1 and 10 micrometers under the electron microscope. Although all kaolin group minerals have the same chemical composition, changes can be seen in the ratio, variety and spatial orientation (structural and sequence differences) of kaolinite minerals according to their formation forms. These changes are expressed under the headings of mineralogical composition, chemical composition, particle size distribution and various rheological properties. Differences in these properties cause different color, strength ratio, dryness level and plastic properties in kaolinite clays. The type of kaolin to be used is determined according to the needs in the usage areas.