Table 7 Chemical composition of the model glasses analyzed by XRF (wt %)
From: Modeling of Bohemian and Moravian glass recipes from Gothic to Baroque periods
Gothic, calculated | Gothic, model glass | Renaissance, calculated | Renaissance, model glass | Baroque, calculated | Baroque, model glass | |
|---|---|---|---|---|---|---|
SiO2 | 62.9 | 62.2 | 62.1 | 62.6 | 74.6 | 74.1 |
Al2O3 | 0.6 | 0.6 | 0.7 | 0.7 | 1.1 | 0.3 |
CaO | 11.1 | 11.2 | 17.2 | 16.2 | 7.8 | 8.5 |
K2O | 20.4 | 20.8 | 13.9 | 14.9 | 15.4 | 15.8 |
Na2O | 0.3 | 0.4 | 1.0 | 1.3 | – | 0.2 |
MgO | 2.0 | 2.1 | 2.1 | 1.9 | 0.2 | 0.2 |
MnO | 0.8 | 0.9 | 0.8 | 0.8 | 0.04 | 0.01 |
Fe2O3 | 0.2 | 0.3 | 0.2 | 0.3 | 0.1 | 0.1 |
P2O5 | 0.9 | 1.1 | 0.9 | 0.9 | – | – |
TiO2 | 0.02 | 0.02 | 0.02 | 0.02 | 0.04 | 0.03 |
BaO | 0.1 | 0.2 | 0.1 | 0.1 | – | – |
SO3 | 0.4 | 0.2 | 0.4 | 0.1 | – | – |
Cl | 0.07 | – | 0.2 | 0.1 | – | – |
Rb2O | 0.04 | 0.04 | 0.03 | 0.03 | – | – |
SrO | 0.04 | 0.04 | 0.04 | 0.4 | – | – |
As2O3 | – | – | – | – | 0.8 | 0.7 |
CaO/K2O | 0.5 | 0.5 | 1.2 | 1.1 | 0.5 | 0.5 |