Page 459 - Copper and Bronze in Art: Corrosion, Colorants, Getty Museum Conservation, By David Scott

TABLE 16 X-RAY DIFFRACTION DATA FOR A RECIPE FOR BASIC VERDIGRIS
FROM THE M A Ρ ΡΑ E CLAVICULA COMPARED WITH SYNTHESES OF
COMPOUND Β AND COMPOUND A AND SYNTHESIS BY MACTAGGART

MAP PA Ε COMPOUN D Β COMPOUN D A MACTAGG ART
CLAVICUL. 4 (SCHWEIZ ER AND (AUTHOR' S SYNTHESI S d
RECIPE 6 MÜHLETH ALER) SYNTHESI.

d-spacing Intensity d-spacing Intensity d-spacing Intensity d-spacing Intensity
11.5 100 11.4 100 11.9 100
9.34 20 9.27 90 9.3 100 8.26 90
8.16 80 8.18 50 7.06 50
6.92 70 7.23 40 6.98 40 5.97 40
6.26 40 6.13 60 6.27 20 5.48 10
5.88 30 5.44 5 5.79 20 4.97 70
5.44 30 5.11 5 5.44 20 4.61 70
4.88 10 4.88 5 5.17 20 4.19 10
4.14 10 4.50 20 4.72 90 3.75 10
3.63 10 4.01 20 4.34 10 3.54 70
3.47 10 3.64 10 4.11 30 3.29 10
3.33 20 3.47 30 3.75 10 3.15 70
3.12 30 3.24 10 3.55 10 3.01 10
2.56 10 3.05 40 3.40 10 2.93 10
2.40 20 2.890 20 3.16 80 2.81 10
2.53 20 2.820 20 3.04 10 2.67 10
2.30 20 2.615 30 2.826 30 2.54 10
2.24 10 2.415 30 2.666 70 2.42 20
2.04 10 2.242 30 2.498 60 2.29 20
1.99 10 2.129 5 2.352 50 2.21 20
1.57 10 2.042 50 2.235 60 7.98 10
1.781 10 2.172 60 1.77 5
1.745 5 2.044 30
1.987 5
1.944 30
1.885 30
1.762 20

a
Mappae clavicula (Smith and Hawthorne 1974 : sec. 6). CI Lab no. 606.
G
G C I 624.
B Lab no.
C G C I Lab no. 625.
G
^ Peter Mactaggart. CI Lab no. 587.
A P P E N D I X D
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