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X-ray powder diffraction investigations of Ruthenian-Byzantine frescoes from the royal Wawel Cathedral (Poland)

Published online by Cambridge University Press:  29 February 2012

Alicja Rafalska-Lasocha*
Affiliation:
Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow, Poland
Wieslaw Lasocha
Affiliation:
Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow, Poland and Institute of Catalysis and Surface Chemistry PAS, ul. Niezapominajek 8, 30-239 Krakow, Poland
Marta Grzesiak
Affiliation:
Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow, Poland
Roman Dziembaj
Affiliation:
Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Krakow, Poland
*
a)Author to whom correspondence should be addressed. Electronic mail: rafalska@chemia.uj.edu.pl

Abstract

Laboratory X-ray powder diffraction was applied to investigate the pigments used by medieval artists in Ruthenian-Byzantine frescoes in the royal Wawel Cathedral in Krakow (Poland). It was found that red fragments contained cinnabar (PDF 06-0256), yellow contained goethite (PDF 29-0713), and blue pieces contained azurite (PDF 02-0153). The green pigment, quite difficult to identify, was finally established as green earths—pigments commonly used in Byzantine wall paintings. Calcite (PDF 24-0027) was detected in all the samples. Small amounts of quartz (PDF 46-1045) in the plaster samples were also detected. The absence or presence of only minute amounts of quartz is a characteristic feature of the Ruthenian-Byzantine frescoes. Malachite was not detected in the green parts of the frescoes, in contrast to earlier investigations of wall paintings in Poland. Experimental details and the results obtained in this study are described and discussed.

Type
Technical Articles
Copyright
Copyright © Cambridge University Press 2010

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