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Table 6 Chemical compositions of the marked positions in Fig. 7d and i (in wt%)

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

P2O5

K2O

CaO

Fe2O3

Possible phase

P1

wt%

 

3.36

14.43

62.42

 

5.53

14.25

 

Glass

mol%

 

5.33

8.97

65.87

 

3.72

16.11

 

P2

wt%

1.25

2.17

26.30

47.19

 

2.26

20.83

 

Anorthite

mol%

1.33

3.59

17.04

51.91

 

1.59

24.54

 

P3

wt%

  

3.94

13.60

32.15

 

50.31

 

Calcium phosphate

mol%

  

2.78

16.30

64.60

 

16.31

 

P4

wt%

 

38.91

38.31

18.27

   

4.51

Quintinite

mol%

 

57.88

22.35

18.09

   

1.68

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