Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-19T07:04:37.924Z Has data issue: false hasContentIssue false

Hydrolysis of ceramic materials: neoformation or rehydroxylation of clay minerals. Oxygen stable isotope analysis

Published online by Cambridge University Press:  09 July 2018

R. Nuñez*
Affiliation:
Departamento de Ciencias de la Tierra y Química Ambiental, Estación Experimental del Zaidin CSIC, Prof. Albareda 1, 18008 Granada
J . Capel
Affiliation:
Departamento de Prehistoria y Arqueología, Universidad de Granada, Spain
E. Reyes
Affiliation:
Departamento de Ciencias de la Tierra y Química Ambiental, Estación Experimental del Zaidin CSIC, Prof. Albareda 1, 18008 Granada
A. Delgado
Affiliation:
Departamento de Ciencias de la Tierra y Química Ambiental, Estación Experimental del Zaidin CSIC, Prof. Albareda 1, 18008 Granada
*

Abstract

Hand-made bricks were manufactured from natural sediments by firing at 700°C and 800°C after which they were hydrothermally altered at 150°C in a high-pressure reactor for 1200 h. Sediments and fired pieces were studied by X-ray diffraction. The <2 μm size-fraction of fired and hydrolysed samples were also studied by X-ray diffraction and oxygen isotope analysis. The oxygen isotope composition of the samples became depleted in 18O by alteration. Our results are consistent with a process of hydration and hydroxylation of the partially destroyed clay minerals in the fired bricks. The work is relevant to understanding the origins and alteration processes in old ceramic materials.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2002

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bechtel, A. & Hoernes, S. (1990) Oxygen isotope fractionation between oxygen of different sites in illite minerals: a potential single-mineral thermometer. Contributions to Mineralogy and Petrology, 104, 463470.Google Scholar
Borthwick, J. & Harmon, R.S. (1982) A note regarding ClF3 as an alternative to BrF5 for oxygen isotope analysis. Geochimica et Cosmochimica Acta, 46, 16651668.Google Scholar
Brindley, G.W. & Lemaitre, J. (1987) Thermal oxidation and reduction reactions of clay minerals. Pp. 319370 in. Chemistr y of Clays and Clay Minerals (Newman, A.C.D., editor). Monograph 6, Mineralogical Society, London.Google Scholar
Brown, G. & Brindley, G.W. (1980) X-ray diffraction procedures for clay mineral identification. Pp. 495 in. Crystal Structures of Clay Minerals and their X-ray Identification (Brindley, G.W. & Brown, G., editors). Monograph 5, Mineralogical Society, London.Google Scholar
Cuadros, J., Caballero, E., Huertas, F.J., Jimenez de Cisneros, C., Huertas, F. & Linares, J. (1999) Experimental alteration of volcanic tuff: smectite formation and effect on 18O isotope composition. Clays and Clay Minerals, 47, 769776.CrossRefGoogle Scholar
Epstein, S. & Mayeda, T.K. (1953) Variation of the 18O/16O ratio in natural waters. Geochimica et Cosmochimica Acta, 4, 213224.CrossRefGoogle Scholar
Giletti, B.J. (1985) The nature of oxygen transport within minerals in the presence of hydrothermal water and the role of diffusion. Chemical Geology, 53, 197206.CrossRefGoogle Scholar
Hoernes, S. & van Reenen, D.D. (1992) The oxygenisotopic composition of granulites and retrogressed granulites from the Limpopo Belt as a monitor of fluid-rock interaction. Precambrian Research, 55, 353364.CrossRefGoogle Scholar
Kawano, M. & Tomita, K. (1992) Formation of allophane and beidellite during hydrothermal alteration of volcanic glass below 200°C. Clays and Clay Minerals, 40, 666674.Google Scholar
Kawano, M., Tomita, K. & Kamino, Y. (1993) Formation of clay minerals during low temperature experimental alteration of obsidian. Clays and Clay Minerals, 41, 431441.Google Scholar
Kübler, B. (1964) Les argiles, indicateurs de metamor-phisme. Revieu Institute Française Petrole, 19, 10931112.Google Scholar
Newman, A.C.D. (1987) Chemistry of Clays and Clay Minerals. Monograph 6, Mineralogical Society, London.Google Scholar
O’Neil, J.R. & Kharaka, Y.K. (1976) Hydrogen and oxygen isotope exchange reactions between clay minerals and water. Geochimica et Cosmochimica Acta, 40, 241246.Google Scholar
Schultz, L.G. (1964) Quantitative interpretation of mineralogical composition from X-ray and chemical data for the Pierre Shale. US Geological Survey Professional Paper, 391C.Google Scholar
Sheppard, S.M.F. & Gilg, H.A. (1996) Stable isotope geochemistry of clay minerals. Clay Minerals, 31, 124.Google Scholar
Tazaki, K., Fyfe, W.S. & Van der Gaast, S.J. (1989) Growth of clay minerals in natural and synthetic glasses. Clays and Clay Minerals, 37, 348354.CrossRefGoogle Scholar
Tazaki, K., Tiba, T., Aratani, M. & Miyachi, M. (1992) Structural water in volcanic glass. Clays and Clay Minerals, 40, 122127.Google Scholar
Tomita, K., Yamane, H. & Kawano, M. (1993) Synthesis of smectite from volcanic glass at low temperature. Clays and Clay Minerals, 41, 655661.Google Scholar
Wilson, M.J. (editor) (1987) Determinative Methods in Clay Mineralogy. New York.Google Scholar
Yeh, H.W. (1980) D/H ratios and later stage dehydration of shales during burial. Geochimicaet Cosmochimica Acta, 44, 341352.Google Scholar