Yacimiento de arcilla caolinífera de relleno Kárstico en Chavaler (Cordillera Ibérica, Soria)

Abstract

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