Table 3 The chemical composition of the ceramic body by SEM/EDS [expressed as oxides wt%, normalized to 100%] (an average of the three measurements—an area analysis)
From: Gothic green glazed tile from Malbork Castle: multi-analytical study
Compound | Na2O | MgO | Al2O3 | SiO2 | P2O5 | K2O | CaO | TiO2 | FeO | PbO |
|---|---|---|---|---|---|---|---|---|---|---|
Feldspar | 1.0 | nd | 16.3 | 64.4 | 0.3 | 13.5 | nd | nd | 0.4 | 1.9 |
Ceramic body mass | 2.1 | 2.1 | 18.6 | 55.3 | nd | 5.6 | 1.5 | 0.8 | 5.7 | nd |
Quartz | nd | nd | 1.0 | 99.6 | nd | nd | nd | nd | nd | nd |