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Table 4 Average chemical composition of the green glaze by SEM/EDS/WDS [expressed as oxides wt%]

From: Gothic green glazed tile from Malbork Castle: multi-analytical study

Compound

Na2O

MgO

Al2O3

SiO2

P2O5

K2O

CaO

TiO2

FeO

CuO

PbO

As2O3

SnO2

Sb2O3

ZnO

Average

2.1

1.02

3.0

38.3

0.20

1.8

2.8

0.5

3.3

9.4

37.3

0.21

0.51

0.53

0.04

Stdv.

0.6

0.40

0.9

5.0

0.06

0.8

1.4

0.1

0.8

1.9

5.0

0.20

0.19

0.13

0.02

Method

EDS

WDS

EDS

EDS

WDS

EDS

EDS

EDS

EDS

EDS

EDS

WDS

WDS

WDS

WDS

  1. WDS measurements for As, Mg, P, Sn, Sb and Zn