More than gold - an interdisciplinary, complementary study of gilding materials and techniques in Baroque altarpieces from Portugal
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Abstract
The paper deals with an interdisciplinary and multi-technique study of gilding materials and techniques in several Portuguese altarpieces during the Baroque period, developed within a research project funded by the Portuguese Foundation for Science and Technology (PTDC/EAT-EAT/116700/2010). Different microscopic techniques together with X-ray diffraction, X-ray micro-CT, micro-FTIR and micro-Raman spectroscopy were used to characterize the stratigraphic structure and gilding techniques of 49 samples taken from 7 altarpieces in the Lisbon/Cascais and Santarém areas. The research is also a comparative study between the gilding materials and techniques used in altarpieces from the same historical period but in two different geographical areas.
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