Table 2.
Normalised chemical composition of the glazes determined by SEM–EDS
| Sample | Ceramic Type | Glaze colour | Transparent/Opaque | Glaze Type | Na2O | MgO | Al2O3 | SiO2 | P2O5 | Cl | K2O | CaO | TiO2 | MnO | Fe2O3 | CuO | ZnO | SnO2 | Sb2O3 | PbO | Na2O + K20 | Other |
| Chi 1 | 4c | Light green-turquoise and brown | T | High lead low alkali | 0.8 | 0.4 | 2.2 | 31.8 | 0.0 | 0.0 | 2.3 | 3.1 | 0.2 | 0.0 | 0.7 | 0.5 | 0.0 | 0.0 | 0.0 | 57.9 | 3.1 | |
| Chi 2 (weathered) | 5 | Light green-turquoise | T | High lead low alkali | 0.0 | 0.1 | 1.1 | 13.7 | 9.7 | 0.0 | 0.1 | 7.6 | 0.2 | 0.0 | 1.0 | 0.8 | 0.0 | 0.0 | 0.0 | 64.2 | 0.1 | |
| Chi 3 (weathered) | 3a | Light green-yellowish | T | High lead low alkali | 0.1 | 0.3 | 4.5 | 43.1 | 0.8 | 0.0 | 0.9 | 2.5 | 0.3 | 0.0 | 8.5 | 2.2 | 0.0 | 0.8 | 0.0 | 36.1 | 1.0 | |
| Chi 4 | 3b | Light green-turquoise | T | High lead low alkali | 1.2 | 0.2 | 0.6 | 33.5 | 0.0 | 0.0 | 1.5 | 2.5 | 0.0 | 0.0 | 0.7 | 1.2 | 0.0 | 0.3 | 0.0 | 58.2 | 2.7 | |
| Chi 7 (weathered) | 3a | Light green-turquoise | T | High lead low alkali | 0.0 | 0.2 | 2.5 | 12.0 | 12.7 | 0.0 | 0.3 | 10.8 | 0.2 | 0.0 | 2.6 | 0.8 | 0.0 | 0.2 | 0.0 | 57.3 | 0.4 | |
| Chi 9 | 1b | Yellow, green and brown | T | High lead low alkali | 1.1 | 0.4 | 2.8 | 33.8 | 0.0 | 0.0 | 1.7 | 2.3 | 0.3 | 0.0 | 1.3 | 1.5 | 0.0 | 0.0 | 0.0 | 54.8 | 2.8 | |
| Chi 10 | Light brown, ochre, and dark brown | T | High lead low alkali | 0.3 | 0.2 | 0.5 | 28.4 | 0.0 | 0.0 | 0.8 | 2.1 | 0.1 | 0.2 | 0.4 | 2.3 | 0.0 | 0.0 | 0.0 | 64.8 | 1.1 | ||
| Chi 11 | Yellow and green | T | High lead low alkali | 1.4 | 0.4 | 2.4 | 35.3 | 0.0 | 0.0 | 2.4 | 2.2 | 0.2 | 0.0 | 1.5 | 1.0 | 0.0 | 0.0 | 0.0 | 53.3 | 3.8 | ||
| Chi 14 | 4b | Yellow | T | High lead low alkali | 1.4 | 0.3 | 3.8 | 30.2 | 0.0 | 0.0 | 2.1 | 2.0 | 0.3 | 0.0 | 1.3 | 0.3 | 0.0 | 0.0 | 0.0 | 58.3 | 3.5 | |
| Chi 25 | Yellow and dark green | T | High lead low alkali | 0.2 | 0.3 | 3.0 | 30.0 | 0.0 | 0.0 | 0.7 | 1.4 | 0.2 | 0.0 | 1.4 | 4.5 | 0.0 | 0.1 | 0.0 | 58.0 | 0.9 | 0.3 ZnO | |
| Chi 23 | Ring base | Yellow, green and brown | T | High lead low alkali | 0.3 | 0.2 | 2.6 | 33.8 | 0.0 | 0.0 | 0.8 | 0.5 | 0.1 | 0.0 | 1.0 | 3.4 | 0.0 | 0.0 | 0.0 | 57.3 | 1.0 | |
| Chi 13 | 1b | Yellow, green and brown | T | High lead low alkali | 0.6 | 0.1 | 0.2 | 27.0 | 0.0 | 0.0 | 0.6 | 0.6 | 0.0 | 0.0 | 0.1 | 4.9 | 0.0 | 0.0 | 0.0 | 65.8 | 1.2 | |
| Chi 15 | 1b? | Yellow, green and brown | T | High lead low alkali | 1.4 | 0.4 | 3.8 | 35.4 | 0.0 | 0.0 | 1.6 | 3.3 | 0.5 | 0.0 | 2.9 | 0.0 | 0.0 | 0.0 | 0.0 | 50.7 | 2.9 | |
| Chi 17 | Flat base | Yellow, green and brown | T | High lead low alkali | 0.4 | 0.5 | 5.0 | 34.0 | 0.0 | 0.0 | 1.0 | 2.3 | 0.5 | 1.7 | 1.6 | 0.0 | 0.0 | 0.0 | 0.0 | 52.9 | 1.4 | |
| Chi 18 | Yellow, green and brown | T | High lead low alkali | 0.5 | 0.2 | 1.7 | 33.7 | 0.0 | 0.0 | 1.6 | 1.5 | 0.1 | 1.4 | 1.2 | 1.4 | 0.3 | 0.0 | 0.0 | 56.4 | 2.1 | 0.4 ZnO | |
| Chi 19 | 1b | Yellow and green | T | High lead low alkali | 0.4 | 0.3 | 2.5 | 27.7 | 0.0 | 0.0 | 0.8 | 3.5 | 0.2 | 0.0 | 1.2 | 1.4 | 0.0 | 0.0 | 0.0 | 61.9 | 1.2 | |
| Chi 20 | 1b | Green | T | High lead low alkali | 1.0 | 0.5 | 3.6 | 36.5 | 0.0 | 0.0 | 2.1 | 2.8 | 0.3 | 0.0 | 1.4 | 3.0 | 0.0 | 0.0 | 0.0 | 48.9 | 3.0 | |
| Chi 21 | 1b | Yellow and green | T | High lead low alkali | 0.4 | 0.3 | 2.9 | 29.9 | 0.0 | 0.0 | 1.0 | 1.7 | 0.3 | 0.0 | 1.4 | 1.8 | 0.1 | 0.1 | 0.0 | 60.3 | 1.4 | 0.5 ZnO |
| Chi 22 | 2 | Yellow, green and brown | T | High lead low alkali | 0.4 | 0.2 | 1.4 | 32.8 | 0.0 | 0.0 | 1.5 | 2.0 | 0.0 | 1.7 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 | 59.2 | 1.9 | |
| Chi 26 | Blue?, brown | T | High lead low alkali | 0.4 | 0.4 | 2.4 | 34.0 | 0.0 | 0.0 | 1.4 | 1.2 | 0.2 | 0.0 | 1.3 | 0.7 | 0.1 | 0.0 | 0.0 | 57.9 | 1.8 | ||
| Chi 27 | Ring base | Light yellow, green and brown | O | High lead low alkali | 1.0 | 0.1 | 0.4 | 26.1 | 0.0 | 0.0 | 1.3 | 1.2 | 0.0 | 0.0 | 0.3 | 1.4 | 0.1 | 2.5 | 0.0 | 65.6 | 2.3 | 0.4 ZnO |
| Chi 28 | 3a | White, green and brown | O | High lead low alkali | 0.4 | 0.2 | 0.9 | 28.9 | 0.0 | 0.0 | 1.0 | 1.6 | 0.0 | 2.4 | 0.4 | 3.8 | 0.0 | 0.0 | 0.0 | 60.5 | 1.3 | |
| Chi 30 Sn rich | 6 | White and brown | O | Lead alkali | 0.9 | 0.2 | 1.8 | 34.5 | 0.0 | 0.0 | 3.3 | 1.6 | 0.0 | 3.2 | 0.7 | 0.3 | 0.0 | 22.5 | 0.0 | 30.9 | 4.2 | |
| Chi 30 | 6 | White and brown | O | Lead alkali | 0.8 | 0.4 | 2.6 | 41.1 | 0.0 | 0.0 | 3.6 | 3.7 | 0.1 | 8.0 | 1.0 | 0.1 | 0.0 | 2.5 | 0.0 | 36.1 | 4.4 | |
| Chi 5 | Light green-turquoise | T | Lead alkali | 1.1 | 0.3 | 2.0 | 39.0 | 0.0 | 0.0 | 3.4 | 3.4 | 0.2 | 0.0 | 1.4 | 1.5 | 0.5 | 0.3 | 0.0 | 46.8 | 4.5 | 0.5 ZnO | |
| Chi 6 | 5 | Light green-turquoise | O | Lead alkali | 0.8 | 0.1 | 2.1 | 42.8 | 0.0 | 0.0 | 3.7 | 2.6 | 0.0 | 0.0 | 0.6 | 1.8 | 0.0 | 0.0 | 0.0 | 45.4 | 4.5 | 0.3 ZnO |
| Chi 6 Sn rich | 5 | Light green-turquoise | O | Lead alkali | 0.7 | 0.1 | 1.9 | 42.3 | 0.0 | 0.0 | 3.9 | 1.7 | 0.1 | 0.0 | 0.5 | 1.9 | 0.1 | 1.8 | 0.0 | 45.1 | 4.6 | |
| Chi 16 | Yellow | T | Lead alkali | 2.0 | 0.3 | 3.1 | 40.6 | 0.0 | 0.0 | 2.9 | 1.9 | 0.3 | 0.0 | 1.7 | 0.0 | 0.0 | 0.0 | 0.0 | 47.2 | 4.9 | ||
| Chi 12 | 4a? | Yellow and brown | T | Lead alkali | 2.8 | 0.6 | 5.0 | 38.8 | 0.0 | 0.0 | 3.6 | 2.4 | 0.3 | 0.4 | 2.9 | 0.0 | 0.0 | 0.0 | 0.0 | 43.2 | 6.3 | |
| Chi 8 | 4a | Yellow | T | Lead alkali | 4.1 | 1.4 | 8.7 | 30.9 | 0.0 | 0.0 | 2.4 | 5.6 | 0.5 | 0.0 | 3.7 | 0.0 | 0.0 | 0.0 | 0.0 | 42.6 | 6.5 | |
| Chi 24 | Ring base | Light yellow | T | Lead alkali | 2.4 | 0.5 | 3.5 | 42.3 | 0.0 | 0.0 | 5.0 | 3.2 | 0.3 | 0.0 | 2.7 | 0.2 | 0.0 | 0.5 | 0.0 | 39.5 | 7.39 | |
| Chi 29 | 3a | White? | T | Alkali low lead | 1.3 | 2.4 | 12.6 | 52.8 | 0.0 | 0.0 | 5.6 | 6.8 | 0.5 | 0.0 | 3.8 | 0.7 | 0.0 | 0.0 | 0.0 | 13.5 | 6.9 |