Table 2: Isotopic and chemical composition of Roman and late Antique glasses from Thessaloniki Agora, 1st–6th century AD in age. Note that CoO and NiO contents are not reported because they are lower than EMPA detection limits for all samples (LOD of CoO and NiO = 0.03 wt%).

Sample18OSiO2Na2OCaOAl2O3K2OMgOFeOTiO2MnOP2O5SO3ClCuOZnOSnO2Sb2O3PbO
Number(VSMOW)Wt%Wt%Wt%Wt%Wt%Wt%Wt%Wt%Wt%Wt%Wt%Wt%Wt%Wt%Wt%Wt%Wt%

1-115.566.1716.908.602.680.651.461.220.181.640.130.350.68<0.03<0.04<0.04<0.04<0.08
2-115.664.6514.966.143.160.941.491.110.201.480.650.160.650.670.040.89<0.042.90
3-115.571.4815.407.422.440.370.590.580.090.550.020.240.96<0.03<0.04<0.04<0.04<0.08
4-115.664.249.885.741.5911.473.480.300.03<0.051.300.070.64<0.03<0.04<0.040.09<0.08
5-115.467.6816.947.082.730.570.961.590.281.090.070.231.09<0.03<0.04<0.04<0.04<0.08
6-115.572.9817.004.982.090.560.510.290.09<0.050.010.220.90<0.03<0.04<0.040.25<0.08
7-115.665.4319.766.542.380.401.081.140.261.120.020.271.600.14<0.04<0.04<0.040.33
8-115.567.1416.837.862.920.911.291.650.201.450.260.250.54<0.03<0.04<0.04<0.04<0.08
9-115.665.5317.337.842.950.851.411.390.191.670.260.300.53<0.03<0.04<0.04<0.04<0.08
10-115.576.519.678.110.253.781.030.06<0.04<0.050.060.400.19<0.03<0.04<0.04<0.04<0.08

mean isotopic composition