Table 7 Chemical composition of the glazes of samples before (B) and after (A) the surfaces were cleaned, converted to molar percentage; main components
From: Multi-methodical study of Early Modern Age archaeological glazed ceramics from Prague
Samples | Content (mol%) | Colour | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SiO2 | Al2O3 | PbO | Fe2O3 | CaO | TiO2 | K2O | Na2O | MgO | CuO | P2O5 | Sb2O3 | L*a*b* | |
2 lid–glaze A | 72.05 | 5.22 | 14.14 | 0.51 | 2.89 | 0.45 | 0.96 | 0.44 | 0.45 | 2.27 | 0.51 | 0.12 | 44* − 4*16* |
2 lid–glaze B | 64.98 | 6.29 | 14.16 | 0.64 | 5.80 | 0.58 | 1.97 | 0.90 | 0.69 | 2.57 | 1.28 | 0.12 | 45* − 2*14* |
3 bowl–glaze A | 60.58 | 1.30 | 25.20 | 0.35 | 3.74 | 0.14 | 0.35 | 0.12 | 0.55 | 7.49 | 0.04 | 0.15 | 38* − 5*4* |
3 bowl–glaze B | 59.40 | 2.80 | 27.72 | 0.82 | 2.97 | 0.45 | 0.63 | 0.38 | 0.89 | 3.74 | 0.13 | 0.08 | 36* − 5*5* |
7 jar–glaze A | 70.71 | 2.59 | 14.90 | 0.19 | 1.27 | 0.23 | 0.88 | 0.93 | 0.69 | 4.49 | 0.36 | 0.12 | 38* − 9*11* |
7 jar–glaze B | 61.79 | 4.60 | 17.07 | 0.55 | 4.70 | 0.37 | 1.76 | 1.58 | 1.94 | 4.78 | 0.85 | 0.13 | 42* − 3*12* |