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Title: Tracking old and new colours: Material study of 16th century mural paintings from Évora Cathedral (Southern Portugal)
Authors: Helvaci, Y
Dias, L
Manhita, A
Martins, S
Cardoso, A
Candeias, A
Gil, M
Keywords: pigments
technical photography
Issue Date: 2016
Publisher: Wiley
Citation: Y.Z. Helvaci, L. Dias, A. Manhita, S. Martins, A. Cardoso, A. Candeias, M. Gil (2016) Tracking old and new colors: Material study of 16th century mural paintings from Évora Cathedral (Southern Portugal). Color Research and Application, 41, 276-282. DOI: 10.1002/col.22040
Abstract: This article describes the results of a multi-analytical research carried out on the mural paintingsfromEvora Cathedral, one of the oldest and most promi-nent monuments ofEvora city. The paintings were a late16th Century addition to the cathedral’s northern tran-sept chapel and are attributed to the painter JosedeEscovar, whose painting workshop was remarkably activein the so-called golden age of mural pai ntings in south-ern Portugal. The aim of the study was to reconstruct thepaintings’ life story through a material s science perspec-tive by discerning the material characteristics of the orig-inal and overpaint campaigns. The analytical setupcomprised technical photography (TP) in the visible andUV light, Vis-Spectrophotometry, optical microsc opy(OM) complemented with scanning electron microscopywith energy dispersive X-ray spectrometry (SEM-EDS),micro Fourier transform infrared spectrometry (mFT-IR)and pyrolysis–gas chromatography (Py-GC/MS) analysesof the collected samples. Results show that the originalpaint layers were executed with a combination of frescoand secco techniques, using a very simple chromatic pal-ette composed of earth pigments, mercury sulphide, cal-cium carbonate and green copper based pigments. Thepaintings were heavily retouched and overpainted usingearth pigments, smalt, Prussian blue, zinc white and leadwhite. Furthermo re, the analyses of the cross-sectionstaken from the stuccoed frames revealed a first decora-tive campaign made with gold and silver alloy
Type: article
Appears in Collections:HERCULES - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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