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Modified Mineral Phases During Clay Ceramic Firing

Published online by Cambridge University Press:  01 January 2024

M. El Ouahabi ,
L. Daoudi ,
F. Hatert  and
N. Fagel
M. El Ouahabi*
Affiliation:
UR Argile, Géochimie et Environnement sédimentaires (AGEs), Département de Géologie B-18, Sart-Tilman, Université de Liège, Liége, B-4000, Belgium
L. Daoudi
Affiliation:
Laboratoire de Géosciences et Environnement, Département de Géologie, Faculté des Sciences et Techniques, BP 549, Marrakech, Morocco
F. Hatert
Affiliation:
Laboratory of Mineralogy, B-18, University of Liège, B-4000, Liège, Belgium
N. Fagel
Affiliation:
UR Argile, Géochimie et Environnement sédimentaires (AGEs), Département de Géologie B-18, Sart-Tilman, Université de Liège, Liége, B-4000, Belgium
*
*E-mail address of corresponding author: Meriam.ElOuahabi@ulg.ac.be
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Abstract

Ceramic clays are among the most complicated of ceramic systems because of the very intricate relationship between the behavior of minerals during ceramic processing and their modifications during heating. A major challenge is to predict the phase changes in clay ceramics. The aims of this study were to establish reference data of ceramic products that can be formed based on the mineralogical compositions of the local raw materials. These data, in turn, can be compared with archeological ceramics in order to study their origins.

The mineralogical compositions and modifications during firing (550–1100°C under oxidizing conditions) of seven clayey materials sampled from the main clay deposits of northern Morocco were evaluated by X-ray powder diffraction. Two groups of clays were distinguished according to the type of neoformed high-temperature minerals: non-calcareous clays and calcareous clays. For the non-calcareous raw materials, spinel was produced at 950°C. Cristobalite and mullite were formed at temperatures in excess of 1000°C from clays that contain illite, kaolinite, and chlorite. In clays containing vermiculite and large amounts of chlorite, hematite was formed at temperatures in excess of 950°C. Firing of calcareous clays at temperatures >950°C yielded Ca-silicates (diopside, gehlenite and wollastonite), spinel, cristobalite, hematite, and feldspars. Mullite may also form in the calcareous clay products when the carbonate content exceeds 10%.

Keywords

CeramicClayPhase modificationsRaw MaterialsX-ray Powder Diffraction
Type
Article
Information
Clays and Clay Minerals , Volume 63 , Issue 5 , October 2015 , pp. 404 - 413
Copyright
Copyright © The Clay Minerals Society 2015

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References

Azarov, G.M. Maiorova, E.V. Oborina, M.A. and Belyakov, A.V., 1995 Wollastonite raw materials and their applications (a review) Glass and Ceramics 52 237–240.CrossRefGoogle Scholar
Brown, G.E. and Bailey, S.W., 1963 Chlorite polytypism: II. Crystal structure of a one-layer Cr-chlorite American Mineralogist 48 42–61.Google Scholar
Castellanos, A. Mauricio, O. Ríos, R. Alberto, C. Ramos, G. Angel, M. Plaza, P. and Vinicio, E., 2012 A comparative study of mineralogical transformations in fired clays from the Laboyos Valley, Upper Magdalena Basin (Colombia) Boletin de Geología 34 43–55.Google Scholar
Cultrone, G. Rodriguez-Navarro, C. Sebastian, E. Cazalla, O. and Torre, M.J.D.L., 2001 Carbonate and silicate phase reactions during ceramic firing European Journal of Mineralogy 13 621–634.CrossRefGoogle Scholar
De Vleeschouwer, F. Renson, V. Claeys, P. Nys, K. and Bindler, R., 2011 Quantitative WD-XRF calibration for small ceramic samples and their source material Geoarchaeology 26 440–450.CrossRefGoogle Scholar
El Ouahabi, M. Daoudi, L. De Vleeschouwer, F. Bindler, R. and Fagel, N., 2014 Potentiality of clay raw materials from northern Morocco in ceramic industry: Tetouan and Meknes areas Journal of Minerals and Materials Characterization and Engineering 2 145–159.CrossRefGoogle Scholar
El Ouahabi, M. Daoudi, L. and Fagel, N., 2014 Preliminary mineralogical and geotechnical characterization of clays from Morocco: Application to ceramic industry Clay Minerals 49 1–17.CrossRefGoogle Scholar
Hajjaji, M. and Kacim, S., 2004 Clay-calcite mixes: Sintering and phase formation British Ceramic Transactions 103 29–32.CrossRefGoogle Scholar
Jordán, M.M. Boix, A. Sanfeliu, T. and de la Fuente, C., 1999 Firing transformations of Cretaceous clays used in the manufacturing of ceramic tiles Applied Clay Science 14 225–234.CrossRefGoogle Scholar
Jordán, M.M. Sanfeliu, T. and de la Fuente, C., 2001 Firing transformations of Tertiary clays used in the manufacturing of ceramic tile bodies Applied Clay Science 20 87–95.CrossRefGoogle Scholar
Khalfaoui, A. and Hajjaji, M., 2009 A chloritic-illitic clay from Morocco: Temperature-time-transformation and neoformation Applied Clay Science 45 83–89.CrossRefGoogle Scholar
Lee, W.E. Souza, G.P. McConville, C.J. Tarvornpanich, T. and Iqbal, Y., 2008 Mullite formation in clays and clayderived vitreous ceramics Journal of the European Ceramic Society 28 465–471.CrossRefGoogle Scholar
Levin, E.M. Robbins, C.R. and McMurdie, H.F., 1964 Phase Diagrams for Ceramists Columbus, Ohio, USA American Ceramic Society.Google Scholar
Moore, D.M. and Reynolds, R.C., 1997 X-ray Diffraction and the Identification and Analysis of Clay Minerals Oxford, UK Oxford University Press.Google Scholar
Nodari, L. Marcuz, E. Maritan, L. Mazzoli, C. and Russo, U., 2007 Hematite nucleation and growth in the firing of carbonate-rich clay for pottery production Journal of the European Ceramic Society 27 4665–4673.CrossRefGoogle Scholar
Pardo, F. Meseguer, S. Jordán, M.M. Sanfeliu, T. and Gonzá, l. I., 2011 Firing transformations of Chilean clays for the manufacture of ceramic tile bodies Applied Clay Science 51 147–150.CrossRefGoogle Scholar
Peters, T. and Iberg, R., 1978 Mineralogical changes during firing of calcium-rich brick clays Ceramic Bulletin 57 503–509.Google Scholar
Rodriguez-Navarro, C. Cultrone, G. Sanchez-Navas, A. and Sebastian, E., 2003 TEM study of mullite growth after muscovite breakdown American Mineralogist 88 713–724.CrossRefGoogle Scholar
Trindade, M.J. Dias, M.I. Coroado, J. and Rocha, F., 2009 Mineralogical transformations of calcareous-rich clays with firing: A comparative study between calcite and dolomiterich clays from Algarve, Portugal Applied Clay Science 42 345–355.CrossRefGoogle Scholar
Trindade, M.J. Dias, M.I. Coroado, J. and Rocha, F., 2010 Firing tests on clay-rich raw materials from the Algarve Basin (southern Portugal): Study of mineral transformations with temperature Clays and Clay Minerals 58 188–204.CrossRefGoogle Scholar
Whitney, D.L. and Evans, B.W., 2010 Abbreviations for names of rock-forming minerals American Mineralogist 95 185–187.CrossRefGoogle Scholar