RT Journal Article T1 Yacimiento de arcilla caolinífera de relleno Kárstico en Chavaler (Cordillera Ibérica, Soria) T1 The Chavaler Kaolin Karstic deposits (Iberian Chain, Soria) A1 Sanz Pérez, Eugenio AB The Chavaler karstic deposit is a clay accumulation in a dolina of 90 m in diameter. Clay minerals are represented mainly by kaolinite (80% kaolinite, 20% quartz) and locally also kaolinite-gibbsite facies, and natroaluite. The feldespatic detrital material of the Weald Facies was deposited on a pre-existing prefinimiocene-Pleistocene karst. The karst depression has protected kaolinic deposits from further erosion.The favourable drainage contributed to the kaolinization and initial bauxitization PB Sociedad Geológica de España YR 2003 FD 2003 LK http://hdl.handle.net/10272/9021 UL http://hdl.handle.net/10272/9021 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 13 jul 2026