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Keywords:

  • X-ray diffraction;
  • Fourier transform infrared spectroscopy;
  • Gothic altarpieces;
  • Jaume Huguet;
  • green pigments;
  • copper compounds.

The scientific investigation of ancient paintings gives a unique insight into ancient painting techniques and their evolution through time and geographic location. This study deals with the identification of the green pigments used by one of the most important Catalan masters in Gothic times, Jaume Huguet. Other pigments and materials have also been characterized by means of conventional techniques such as optical microscopy, scanning electron microscopy and Fourier transform infrared spectroscopy. Synchrotron radiation X-ray diffraction has been used to produce maps of phases at a spatial resolution of 100 µm across chromatic layers.