Estudio mineralógico de arcillas cerámicas de la provincia de Zamora. II. Yacimientos terciarios y cuaternarios de la margen derecha de la Cuenca del Duero

Abstract

The mineralogical composition of twenty-three clay simples from nine deposits of the province of Zamora has been studied. The deposits are located in tertiary's and quaternary's regions on the right side of the Duero basin. The techniques used were mainly: cation-exchange capacity, chemical analysis, thermogravimetric analysis, differential thermal analysis and X-ray diffraction. The conclusion arrived at is that the samples are composed, mainly, by illite (55-85 % ) ; kaolinite (10-20 %) and montmorillonite (5-35 %). The clays from samples XVIT1 and XVII-2, contain vermiculite, and the clays from samples XII-2 and XIII-2, contain attapulgite as well.