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Table 1 Major chemical composition elements of pottery samples (wt %)

From: Analysis of newly discovered substances on the vulnerable Emperor Qin Shihuang's Terracotta Army figures

  Na2O MgO Al2O3 SiO2 K2O CaO TiO2 MnO Fe2O3
QY-1 0.96 2.66 19.56 58.33 4.44 1.82 0.91 0.18 10.32
QY-2 1.11 2.15 17.43 60.97 4.34 2.12 0.95 0.17 10.35
QY-3 1.08 2.09 17.67 61.73 4.82 1.64 0.91 0.16 9.52
QY-4 1.40 1.82 16.34 63.25 4.30 1.95 0.92 0.16 9.42
QY-5 1.26 2.15 17.96 60.92 4.49 1.79 0.93 0.17 10.02
QY-6 1.46 1.97 17.01 62.85 4.57 2.19 0.94 0.16 8.58