Universität zu Köln

Margreiter, Raphael ORCID: 0000-0002-4879-2831, Baumann, Jonas, Mantouvalou, Ioanna, Radtke, Martin, Reinholz, Uwe and Strub, Erik ORCID: 0000-0002-4136-2871 (2022). Investigations on fire-gilding. Archaeometry, 64 (6). S. 1465 - 1479. HOBOKEN: WILEY. ISSN 1475-4754

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Abstract

Fire-gilding is a historic technique for the application of golden layers on a number of different base materials utilizing a gold amalgam. This technique leaves a significant amount of Hg in the golden layer, giving archeometrists a reliable indicator to identify fire-gildings. Recent findings on presumably fire-gilded objects have shown in several cases significantly lower Hg content than previously studied objects. This prompted a synchrotron-based X-ray fluorescence investigation into the Hg distribution along the material-gilding interface, as well as a series of measurements regarding the Hg content development in fire-gilded samples during artificial aging. This work presents findings on laboratory-prepared fire-gildings, indicating an Hg enrichment at the interface of fire-gilded silver samples. Notably, such an enrichment is missing in fire-gilded copper samples. Further, it is confirmed that fire-gilded layers typically do not undercut an Hg bulk content of 5%. In this light, it seems improbable that ancient samples that contain <5% Hg are fire-gilded. The results presented in this study might lead to a non-destructive method to identify the Hg enrichment at the interface. This might be obtained by a combination of different non-destructive measurements and might also work unambiguously in samples in which the gold top layer is altered.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Margreiter, Raphael UNSPECIFIED orcid.org/0000-0002-4879-2831 UNSPECIFIED Baumann, Jonas UNSPECIFIED UNSPECIFIED UNSPECIFIED Mantouvalou, Ioanna UNSPECIFIED UNSPECIFIED UNSPECIFIED Radtke, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED Reinholz, Uwe UNSPECIFIED UNSPECIFIED UNSPECIFIED Strub, Erik UNSPECIFIED orcid.org/0000-0002-4136-2871 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-681014
DOI:	10.1111/arcm.12797
Journal or Publication Title:	Archaeometry
Volume:	64
Number:	6
Page Range:	S. 1465 - 1479
Date:	2022
Publisher:	WILEY
Place of Publication:	HOBOKEN
ISSN:	1475-4754
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language DRAWINGS; SILVER Multiple languages Archaeology; Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Geosciences, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/68101