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Table 1 Elemental compositions of the SEM–EDX areas of sample LY01 shown in Fig. 3a (at.%), (CP Chinese Purple, CB Chinese Blue)

From: Man-made blue and purple barium copper silicate pigments and the pabstite (BaSnSi3O9) mystery of ancient Chinese wall paintings from Luoyang

EDX

Element

Si

Cu

Ba

Sn

Pb

Compound

EDX1

38.7

10.9

49.5

EDX2

58.9

1.0

19.5

18.4

BaSnSi3O9

EDX3

59.4

0.8

18.9

18.7

BaSnSi3O9

EDX4

62.5

1.1

18.4

15.7

BaSnSi3O9

EDX5

64.1

16.0

15.9

BaSnSi3O9

EDX6

65.8

1.3

15.2

13.3

0.8

BaSnSi3O9

EDX7

64.0

14.9

14.8

BaSnSi3O9

EDX8

61.6

10.6

9.8

CP

EDX9

67.3

4.8

6.7

2.5

3.8

CP

EDX10

64.9

9.5

10.5

1.5

CP

  1. The values do not add up to 100%, since minor elemental contents are not listed