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Nanoscale pseudobrookite layer in the surface glaze of a Japanese sekishu roof tile

Published online by Cambridge University Press:  09 July 2018

K. Watanabe*
Affiliation:
Advanced Electron Microscopy Group, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-hiroshima, 739-8526, Japan
H. Ohfuji
Affiliation:
Geodynamics Research Center, Ehime University, 2-5 Bunkyo-cho, Matsuyama, 790-8577, Japan
R. Kitagawa
Affiliation:
Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-hiroshima, 739-8526, Japan
Y. Matsui
Affiliation:
Advanced Electron Microscopy Group, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan
*

Abstract

The mineralogy of the glazed surfaces of Japanese sekishu roof tiles covered by a crustose lichen – Lecidella asema (Nyl.) Knoph & Hertel – was investigated using transmission electron microscopy (TEM). The study sought to identify the Ti-Fe mineral observed as a low concentration of Ti and Fe in a previous study of the glazed surfaces of the same roof tile. The TEM analysis revealed that: (1) a thin layer of the Ti-Fe mineral pseudobrookite exists on the glaze surface; (2) the pseudobrookite consists of well-ordered single crystals, continuously and widely distributed on the glaze surface.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2009

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References

Adamo, P., Colombo, C. & Violante, P. (1997) Iron oxides and hydroxides in the weathering interface between Stereocaulon vesuvianum and volcanic rock. Clay Minerals, 32, 453461.Google Scholar
Balangue-Tarriela, M.I.R. (2004) Chemical reaction path modelling of hydrothermal mineralization in the Tongonan geothermal field, Leyte (Philippines). Geothermics, 33, 143179.Google Scholar
Banfield, J.F., Barker, W.W., Welch, S.A. & Taunton, A. (1999) Biological impact on mineral dissolution: application of the lichen model to understanding mineral weathering in the rhizosphere. Proceedings of the National Academy of Sciences of the United States of America, 96, 34043411.CrossRefGoogle ScholarPubMed
Garty, J., Kunin, P., Delarea, J. & Weiner, S. (2002) Calcium oxalate and sulphate-containing structures on the thallial surface of the lichen Ramalina lacera: response to polluted air and simulated acid rain. Plant Cell and Environment, 25, 15911604.Google Scholar
Inoue, M. (1997) Japanese species of Lecidella (Lichenes, Lecanoraceae) (I). Bulletin of the National Science Museum, Tokyo, Series B, 23, 127136.Google Scholar
Jang, H. & Etsell, T.H. (2006) Mineralogy and phase transition of oil sands coke ash. Fuel, 85, 15261534.Google Scholar
Piervittori, R., Salvadori, O. & Laccisaglia, A. (1994) Literature on lichens and biodeterioration of stonework I. Lichenologist, 26, 171192.Google Scholar
Piervittori, R., Salvadori, O. & Laccisaglia, A. (1996) Literature on lichens and biodeterioration of stonework II. Lichenologist, 28, 471483.Google Scholar
Piervittori, R., Salvadoris, O. & Isocrono, D. (1998) Literature on lichens and biodeterioration of stonework III. Lichenologist, 30, 263277.Google Scholar
Piervittori, R., Salvadori, O. & Isocrono, D. (2004) Literature on lichens and biodeterioration of stonework IV. Lichenologist, 36, 145157.Google Scholar
Saito, T., Ishikawa, N. & Kamata, H. (2004) Iron-titanium oxide minerals in block-and-ash-flow deposits: implications for lava dome oxidation processes. Journal of Volcanology and Geothermal Research, 138, 283294.Google Scholar
Watanabe, K., Ohfuji, H., Ando, J. & Kitagawa, R. (2006) Elemental behaviour during the process of corrosion of sekishu glazed roof-tiles affected by Lecidea s.lat. sp. (crustose lichen). Clay Minerals, 41, 819826.Google Scholar