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Table 3 Chemical compositions of the marked positions in Fig. 4c

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 MgO Al2O3 SiO2 K2O CaO Fe2O3 Possible phase
P1 wt% 11.79 7.68 51.43 1.46 26.21 1.43 Diopside
mol% 17.16 4.38 49.83 0.90 27.20 0.52
P2 wt%   5.40 91.43 3.17    Quartz
mol%   3.29 94.61 2.09