From: Modeling of Bohemian and Moravian glass recipes from Gothic to Baroque periods
Location | Bohušov | Veselí nad Moravou | Opava | Chrudim | Praha | Brno | Chrudim | Chrudim | Olomouc |
---|---|---|---|---|---|---|---|---|---|
Date | 1275–1350 | 14th–15th centuries | 1550-1625 | 16th–17th centuries | 17th–18th centuries | 1st half of the 18th century | |||
Early Gothic | Gothic | Renaissance | Baroque | ||||||
Reference | [9] | [31] | [32] | [33] | [34] | [10] | [33] | [33] | [10] |
SiO2 | 38.1 | 60.6 | 60.8 | 58.0 | 60.3 | 61.3 | 60.7 | 74.8 | 75.7 |
Al2O3 | 1.4 | – | 0.7 | 1.5 | 1.9 | 2.0 | 1.5 | 0.2 | 0.2 |
Na2O | 0.3 | – | 0.3 | 0.2 | 0.9 | 1.1 | 0.2 | 0.9 | 0.3 |
K2O | 17.6 | 21.3 | 22.4 | 19.9 | 16.3 | 13.8 | 13.7 | 13.4 | 13.9 |
CaO | 31.9 | 12.4 | 11.4 | 15.4 | 16.3 | 16.8 | 17.2 | 9.6 | 8.2 |
MgO | 2.5 | 3.1 | 2.6 | 2.5 | 2.4 | 2.0 | 2.2 | 0.2 | 0.1 |
SO3 | 0.3 | 0.5 | 0.5 | 0.3 | 0.1 | 0.2 | 0.2 | 0.2 | 0.2 |
P2O5 | 3.0 | 1.2 | 0.7 | 1.0 | 0.8 | 0.8 | 1.0 | 0.1 | <0.1 |
Cl | 0.1 | – | – | 0.1 | 0.2 | 0.3 | 0.2 | 0.2 | 0.1 |
TiO2 | 0.1 | – | – | – | 0.2 | – | – | – | – |
Fe2O3 | 2.5 | 0.2 | 0.3 | 0.3 | 0.2 | 0.2 | 0.5 | 0.1 | <0.1 |
MnO | 2.3 | 0.2 | 0.3 | 0.9 | 0.2 | 0.6 | 1.0 | 0.1 | <0.1 |
As2O3 | – | – | – | – | – | – | – | 0.3 | 1.1 |
CaO/K2O | 1.8 | 0.6 | 0.5 | 0.8 | 1.0 | 1.2 | 1.3 | 0.7 | 0.6 |