Page 444 - Copper and Bronze in Art: Corrosion, Colorants, Getty Museum Conservation, By David Scott

TABLE 4 X-RAY DIFFRACTION DATA FOR NEW COMPOUND C u 2 ( O H ) 3 S 0 4 2H 2 0
5

Intensity d-spacing Intensity d-spacing Intensity d-spacing

100 10.8 28 2.69 5 1.9
47 5.39 23 2.65 5 1.85
17 5.16 4 2.6 5 1.79
12 4.42 26 2.58 2 1.74
11 4.13 10 2.48 7 1.73
6 3.94 31 2.42 4 1.72
9 3.92 20 2.35 4 1.68
22 3.59 2 2.26 6 1.6
12 3.52 3 2.23 6 1.59
3 3.43 10 2.21 4 1.58
13 3.35 12 2.19 16 1.54
7 3.16 16 2.16 6 1.52
4 2.96 8 2.09 5 1.51
5 2.9 11 2.03 3 1.5
8 2.75 6 1.96 7 1.48

From data of Strandberg, Langer, and Johansson (1995).

TABLE 5 X-RAY DIFFRACTION DATA FOR CORROSION ON A CLOCK
IN THE WALLACE COLLECTION 3

CLOCK COI IROSION NAMUWITE CLOCK COF IROSION NAMUWITI
(ICDD 35-052 3) continued (ICDD 35-05; IS)

Intensity d-spacing d-spacing Intensity Intensity d-spacing d-spacing Intensity
100 10.75 10.59 100 5 2.34
10 5.36 5.31 15 1 2.26 2.22 4
5 4.77 2 2.08 2.06 10
10 4.15 4.15 25 2 1.99 1.99 1
10 3.88 3.86 14 1 1.9 1.93 2
2 3.56 3.51 1 2 1.83 1.88 5
5 3.28 3.25 10 1 1.79 1.78 7
2 3.13 3.14 10 1 1.75
1 3.02 1 1.64
2 2.93 2.96 2 1 1.61
1 2.81 1 1.57
20 2.7 2.71 40 1 1.55
20 2.57 2.63 40 1 1.51
5 2.51 2.5 10 1 1.43
1 2.4 2.41 20 1 1.39
Gilded brass clock, French, ca. i78i. Wallace Collection, London (clock F269) . Bequest of Lady Wallace (see C H A P T E R 6, F I G U R E 6.3).
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