Identification of copper-based green pigments in Jaume Huguet's Gothic altarpieces by Fourier transform infrared microspectroscopy and synchrotron radiation X-ray diffraction

Salvadó, N.; Pradell, T.; Pantos, E.; Papiz, M.Z.; Molera, J.; Seco, M.; Vendrell-Saz, M.

doi:10.1107/S0909049502007859

Figure 3
An example of a diffraction pattern as collected by the CCD detector. Image size 2300 × 2300 pixels. Two resolution rings at 5.56 and 2.86 Å are shown together with the identification of some of the phases. Data were collected, typically to 1.3 Å, by setting the CCD detector to the appropriate distance from the sample. All the reflections were used to identify the phases. Generally speaking, the spotty reflections are related mainly to gypsum while the rings corresponding to weddelite, white lead and yellow pigments are very homogeneous indicating fine particle size for these phases. The rings corresponding to some of the compounds forming the green pigment contain some spotty reflections indicating the presence of some large crystallites as well as fine-grain ones.

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 9| Part 4| June 2002| Pages 215-222

doi:10.1107/S0909049502007859

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