Kaolin: Soil, rock and ore

Kaolin is not only a raw material for one of the finest products, porcelain, but also a type mineral for a varied spectrum of environments of deposition characterized by a rather sharp upper limit of formation of 390 ± 10 °C at a pressure of 2000 bar. For all geoscientists dealing with processes below this physical-chemical boundary, the role of kaolin and its mineralogical constituents as marker cannot be overestimated.