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Analysis of Medieval Fresco Pigments From the Georgian Republic

Published online by Cambridge University Press:  28 February 2011

Marie Dneprovskaya*
Affiliation:
The State Hermitage Museum The Laboratory of Scientific Examination Saint Petersburg, Russia
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Abstract

The mineral composition of pigments from mural paintings of the 12th and 13th centuries in the grotto monasteries of Bertubani and Udabno (David-Caredga) were investigated. Apart from traditional pigments, many examples of brown-black plattnerite (PbO2) were found. They were generated by bacteriological oxidation of white lead. This oxidation process has caused great damage to the original painting color. It is necessary to investigate and to remember the potential influence of bacteria on painting pigments while conducting conservation and restoration as well as art historical analysis.

Type
Research Article
Copyright
Copyright © Materials Research Society 1992

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References

1. Tchubinachvili, G.N., The Grotto Monasteries ofDavid-Garega (Tbilisi, 1948), p. 120.Google Scholar
2. Petushkova, J.P. and Lyalikova, N.N., Studies in Conservation 31 (1986), pp. 6569.Google Scholar
3. Matteni, M. and Moles, A., “The Reconversion of Oxidized White Lead in Mural Painting: A Control After a Five YearPeriod”, in ICOM Committee for Conservation, 6th TriennialMeeting, Ottawa (1981), 81/15/1-8.Google Scholar