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Table 2 Chemical compositions of the marked positions in Fig. 2b and f

From: Corrosion of Longquan celadons in the marine environment: study on the celadons from the Dalian Island shipwreck of the Yuan Dynasty

Position No. Ratio Na2O MgO Al2O3 SiO2 K2O CaO TiO2 Fe2O3 MnO P2O5 Possible phase
P1 wt%   15.45 3.84 51.42   28.49   0.79    Diopside
mol%   21.55 2.10 47.74   28.34   0.28   
P2 wt% 1.09 0.86 26.12 55.31 2.21 13.49   0.91    Anorthite
mol% 1.18 1.45 17.24 61.97 1.58 16.19   0.38   
P3 wt% 0.42 0.76 7.83 33.93 3.56 30.31   1.73 0.70 20.76 Calcium phosphate
mol% 0.48 1.35 5.44 39.98 2.68 38.26   0.77 0.70 10.35
P4 wt% 0.30 5.15 10.83 60.30 5.07 9.23 0.46 5.11 2.25 1.30 Glass
mol% 0.31 8.36 6.89 65.15 3.49 10.68 0.37 2.07 2.06 0.59