Dr Marco VERITÀ, Stazione Sperimentale del Vetro, Venice (Italy)
Italian window glass chemical composition from the Roman time to the 18th century
Table 5 – Abbey of San Fruttuoso of Camogli (Genova), 12th-13th centuries:
composition in wt% of the oxides of window glass fragments
| SiO2 | Al2O3 | Na2O | K2O | CaO | MgO | SO3 | P2O5 | Cl | TiO2 | Fe2O3 | MnO | BaO | CuO | SnO2 | ZnO | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SFC-1 | green | 46,1 | 1,25 | 1,15 | 18,9 | 17,5 | 5,80 | 0,17 | 5,70 | 0,28 | 0,13 | 0,85 | 0,67 | 0,15 | 1,20 | 0,07 | 0,10 |
| SFC-2 | olive green | 48,0 | 1,45 | 1,23 | 18,7 | 16,8 | 5,95 | 0,18 | 5,50 | 0,28 | 0,18 | 0,95 | 0,70 | 0,10 | |||
| SFC-3 | colourless | 47,0 | 1,45 | 1,40 | 17,5 | 18,8 | 6,00 | 0,21 | 5,50 | 0,35 | 0,15 | 0,82 | 0,65 | 0,13 | |||
| SFC-4 | colourless | 45,5 | 1,20 | 1,10 | 20,2 | 18,0 | 5,70 | 0,22 | 5,90 | 0,40 | 0,18 | 0,85 | 0,60 | 0,15 | |||
| SFC-5 | colourless | 46,8 | 1,40 | 1,30 | 16,9 | 19,3 | 6,30 | 0,30 | 5,60 | 0,35 | 0,17 | 0,78 | 0,65 | 0,10 |
