Additional file 1 of Analysing the glaze of a medieval ceramic fragment from the Durres Amphitheater in Albania

Additional file 1: Figure S1. a Evolution of apatite supergroup composition in terms of (P+Si)/(Ca+Pb) vs As/(Ca+Pb). b Molar solution of the different groups of the apatite supergroup minerals. Apatite supergroup composition analyses are in Additional file 1: Table S1. Table S1. Chemical composition of apatite group minerals. Table S2. Chemical compositions of the different type of glasses. Figure S2. Conventional SiO2-PbO-Al2O3+CaO+Na2O+K2O+FeO+MgO (in wt.%) classification diagram for the glaze (following [6]). Grading ranges from 80 wt.% SiO2 to 30 wt.% SiO2. The data used are from [15–18].