Abstract
Elemental behaviour, during the process of weathering of glazed sekishu roof-tiles affected by Lecidea s.lat, sp. (a crustose lichen), was investigated using optical and fluorescence microscopy, field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy. Sekishu roof tiles have an opaque reddish brown glaze on their surfaces which consist of an alkali feldspar-type X-ray amorphous glass recrystallized at 1200°C. Optical and fluorescence microscopy revealed the presence of corrosion pits (at a depth of ∼50 μm) at the lichen-glaze interface. Elemental mapping by FE-SEM identified the concentrations of Ti and Fe in the section of the glazed tile analysed. The behaviour of C was correlated with those elements, suggesting the possibility of biomineralization.
Original language | English |
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Pages (from-to) | 819-826 |
Number of pages | 8 |
Journal | Clay Minerals |
Volume | 41 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2006 Dec |
Externally published | Yes |
Keywords
- Biodegradation
- Biodeterioration
- Biomineralization
- Lichen
- Tiles
- Weathering
ASJC Scopus subject areas
- Geochemistry and Petrology