Page 157 - Copper and Bronze in Art: Corrosion, Colorants, Getty Museum Conservation, By David Scott
P. 157
F I G U R E 4.5 Stability-field diagram for the copper(II) halide minerals
at a partial pressure of C0 2 (g) equal to ίο · . The solid and broken
-3
5
i
i
lines represent sulfate activities of o _ 1 and o , respectively (Pollard,
- 2
Thomas, and Williams 1992b).
F I G U R E 4.6 Stability diagram for some sulfates and chlorides showing
regions of stability for six mineral phases, including connellite and
brochantite (Pollard, Thomas, and Williams 1992b).
