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].

附加文件1：补充图S1。a. 磷灰石超族（apatite supergroup）矿物组分随(P+Si)/(Ca+Pb)与As/(Ca+Pb)的演化关系。b. 磷灰石超族不同矿物亚族的摩尔溶液组成。磷灰石超族矿物组分分析数据详见附加文件1的表S1。
表S1：磷灰石族矿物的化学组成。
表S2：不同类型玻璃的化学组成。
补充图S2：遵循文献[6]的常规釉料分类图解，其坐标轴为SiO₂-PbO-Al₂O₃+CaO+Na₂O+K₂O+FeO+MgO（单位：质量百分比wt.%）。该分类的SiO₂含量分级范围为30%~80%（质量百分比）。所用数据来源于文献[15]至[18]。