Fireclay is a specialized type of clay known for its exceptional heat resistance and ability to withstand high temperatures. It is commonly used in refractory applications, such as lining furnaces, fireplaces, and kilns, due to its low thermal conductivity and excellent thermal shock resistance. Fireclay is formed by the decomposition of various minerals and is rich in alumina and silica, imparting its fire-resistant properties. It is often mixed with other refractory materials, such as grog or silica sand, to enhance its strength and refractoriness. Fireclay is a fundamental component in creating heat-resistant and durable structures for a wide range of industrial and domestic applications where exposure to extreme temperatures is a concern.