Please use this identifier to cite or link to this item:
Title: Mineralogical and thermal characterization of kaolinitic clays from Terra Alta (Catalonia, Spain)
Author: Garcia Vallès, Maite
Alfonso Abella, María Pura
Martínez Manent, Salvador
Roca Pascual, Núria
Keywords: Mineralogia
Issue Date: 7-Feb-2020
Publisher: MDPI
Abstract: This research characterizes the kaolinitic clays from Cretaceous-Paleocene lateritic depòsits of Terra Alta (south Catalonia) to evaluate their possible applications. The outcrops and quarries belong to the Horta de Sant Joan and Pinell de Brai areas. The chemical composition, mineralogy, rheological behavior, particle size distribution and plasticity are determined. The Fe and Ti4+ contents prevent them from being directly used as raw material for white ceramics. The mineralogy consists of kaolinite with quartz, illite, hematite, and minor K-feldspar and calcite. Most of the area comprises medium plastic clays that are classified as fired clays and can be used as ceramic and construction materials. In Horta de Sant Joan, a kaolinitic-rich level, up to 75 wt % of kaolinite, is highly crystalline with low plasticity and can be classified as flint clay, useful as a refractory clay. The evaluated kaolinitic clays can also be used to obtain a triaxial ceramic when they are mixed with feldspar to act as a fluxing agent and chamotte.
Note: Reproducció del document publicat a:
It is part of: Minerals, 2020, vol. 10, num. 2, p. 142
Related resource:
ISSN: 2075-163X
Appears in Collections:Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)
Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)

Files in This Item:
File Description SizeFormat 
696057.pdf4.17 MBAdobe PDFView/Open

This item is licensed under a Creative Commons License Creative Commons