UNIQUE PRE‐ROMANESQUE MURALS IN KOSTOĽANY POD TRÍBEČOM, SLOVAKIA: THE PAINTING TECHNIQUE AND CAUSES OF DAMAGE. (19th July 2012)

• Record Type: Journal Article
• Authors: HRADIL, D.; HRADILOVÁ, J.; KOČÍ, E.; ŠVARCOVÁ, S.; BEZDIČKA, P.; MAŘÍKOVÁ‐KUBKOVÁ, J.
• Is Part Of: Archaeometry. Volume 55:Number 4(2013)
• Page Start: 691
• Page End: 706
• Publication Date: 2012-07-19
• Subjects: Archaeometry -- Periodicals; Archaeology -- Expertising -- Periodicals; 930.1
• DOI: 10.1111/j.1475-4754.2012.00704.x
• Languages: English
• ISSNs: 0003-813X

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Pre‐Romanesque murals at Kostoľany pod Tríbečom, Slovakia, have been investigated by portable X‐ray fluorescence and by microanalytical methods to identify painting materials (pigments and binders), and to explain the degradation of colours. Today, missing green and blue shades have been reconstructed according to residual concentrations of Cu, which correspond to copper chlorides—products of salt corrosion of the copper carbonates azurite and/or malachite, accelerated by micro‐organisms. As confirmed by powder X‐ray microdiffraction, original minium (Pb₃O₄) has been transformed to brown–black plattnerite (PbO₂). In increased humidity, even insoluble pigments are washing down from the walls and the intensity of colours further diminishes.</p> </abstract>