De Colorando Auro: Medieval colouring techniques researched using modern analytical techniques
The visual appearance of gold and gilding can be influenced in many ways, such as by changing the composition of the gold alloy or the nature of the gilded substrate. A less known medieval technique, reported in historical treatises, is the chemical treatment of the gilded surface itself, after appl...
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| Dans: | URI:https://journals.openedition.org/techne, |
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| Auteurs principaux: | , , , , , , |
| Format: | Article ou chapitre numérique |
| Langue: | Anglais |
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Technè
2019
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| Accès en ligne: | Accès Université d'Orléans et IFPM Accès Université d'Orléans et IFPM |
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openedition-oai:revues.org:techne_875 |
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openedition |
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openedition-oai:revues.org:techne_875 https://doi.org/10.4000/techne.875 urn:doi:10.4000/techne.875 en https://journals.openedition.org/techne/875 2019-12-19T01:00:00Z info:eu-repo/semantics/openAccess article info:eu-repo/semantics/article urn:handle:20.500.13089/l8g3 https://creativecommons.org/licenses/by-nc-nd/4.0/ De Colorando Auro: Medieval colouring techniques researched using modern analytical techniques Technè C2RMF info:eu-repo/semantics/reference/issn/2750-6185 info:eu-repo/semantics/reference/issn/1254-7867 URI:https://journals.openedition.org/techne Crabbé, Amandine C. Wouters, Helena J. M. Mocuta, Cristian Silly, Mathieu Bertrand, Loïc Terryn, Herman Vandendael, Isabelle patrimoine culturel argent dorure coloration spectroscopie d’absorption des rayons X au voisinage du seuil (XANES) spectroscopie de photoélectrons X par rayonnement synchrotron (SR-XPS) microscopie à balayage électronique-analyse de rayons X par dispersion (SEM-EDX) cuivre fer châsse cultural heritage silver gilding colouration XANES SR-XPS SEM-EDX copper iron shrine The visual appearance of gold and gilding can be influenced in many ways, such as by changing the composition of the gold alloy or the nature of the gilded substrate. A less known medieval technique, reported in historical treatises, is the chemical treatment of the gilded surface itself, after application and burnishing of the gilding. We reporte here results regarding the study of the Holy Lady Shrine of Huy (13th c AD Mosan, Belgium) on which a possible artificial colouration of the gildings was detected. This led to many questions regarding applicable conservation-restoration treatments. Here is an overview of the results obtained, along with a discussion of the methodology that was developed to study this colouration process, also highlighting the necessary complementarity between laboratory and synchrotron-based analytical approaches. The 3-steps methodology proposed in this paper is generic for most cultural heritage problems where the application of ancient surface modification recipes is suspected but where the scarcity of the historical samples does not allow a direct study of such samples. L’aspect visuel de l’or et des dorures peut être modifié de diverses manières, notamment en changeant la composition de l’alliage ou la nature du support doré. Une technique médiévale moins connue, évoquée dans les traités anciens, consiste à provoquer une réaction chimique après application et brunissage de la dorure. Les recherches sur la châsse de Notre-Dame de Huy (art mosan du xiiie siècle) ont révélé une possible coloration artificielle des dorures. Cette découverte soulève de nombreuses questions quant aux traitements de conservation-restauration utilisables. Nous présentons ici un exposé sommaire des résultats obtenus ainsi qu’un compte rendu de la méthode mise au point pour étudier ce procédé de coloration, en soulignant la complémentarité indispensable entre les examens de laboratoire et l’analyse par rayonnement synchrotron. Dans les sciences du patrimoine culturel, cette méthode en trois temps concerne la plupart des situations où une recette ancienne semble avoir été employée pour modifier la surface, mais où la rareté des échantillons historiques ne permet pas l’étude directe de sous-échantillons. |
| collection |
OpenEdition Journal |
| language |
Anglais |
| format |
Article ou chapitre numérique |
| building |
0/Bibliothèque numérique/ 1/Bibliothèque numérique/OpenEdition Journals/ |
| topic |
patrimoine culturel argent dorure coloration spectroscopie d’absorption des rayons X au voisinage du seuil (XANES) spectroscopie de photoélectrons X par rayonnement synchrotron (SR-XPS) microscopie à balayage électronique-analyse de rayons X par dispersion (SEM-EDX) cuivre fer châsse cultural heritage silver gilding colouration XANES SR-XPS SEM-EDX copper iron shrine |
| spellingShingle |
patrimoine culturel argent dorure coloration spectroscopie d’absorption des rayons X au voisinage du seuil (XANES) spectroscopie de photoélectrons X par rayonnement synchrotron (SR-XPS) microscopie à balayage électronique-analyse de rayons X par dispersion (SEM-EDX) cuivre fer châsse cultural heritage silver gilding colouration XANES SR-XPS SEM-EDX copper iron shrine Crabbé, Amandine C. Wouters, Helena J. M. Mocuta, Cristian Silly, Mathieu Bertrand, Loïc Terryn, Herman Vandendael, Isabelle De Colorando Auro: Medieval colouring techniques researched using modern analytical techniques |
| description |
The visual appearance of gold and gilding can be influenced in many ways, such as by changing the composition of the gold alloy or the nature of the gilded substrate. A less known medieval technique, reported in historical treatises, is the chemical treatment of the gilded surface itself, after application and burnishing of the gilding. We reporte here results regarding the study of the Holy Lady Shrine of Huy (13th c AD Mosan, Belgium) on which a possible artificial colouration of the gildings was detected. This led to many questions regarding applicable conservation-restoration treatments. Here is an overview of the results obtained, along with a discussion of the methodology that was developed to study this colouration process, also highlighting the necessary complementarity between laboratory and synchrotron-based analytical approaches. The 3-steps methodology proposed in this paper is generic for most cultural heritage problems where the application of ancient surface modification recipes is suspected but where the scarcity of the historical samples does not allow a direct study of such samples. |
| author |
Crabbé, Amandine C. Wouters, Helena J. M. Mocuta, Cristian Silly, Mathieu Bertrand, Loïc Terryn, Herman Vandendael, Isabelle |
| author_facet |
Crabbé, Amandine C. Wouters, Helena J. M. Mocuta, Cristian Silly, Mathieu Bertrand, Loïc Terryn, Herman Vandendael, Isabelle |
| author_sort |
Crabbé, Amandine C. |
| title |
De Colorando Auro: Medieval colouring techniques researched using modern analytical techniques |
| title_short |
De Colorando Auro: Medieval colouring techniques researched using modern analytical techniques |
| title_full |
De Colorando Auro: Medieval colouring techniques researched using modern analytical techniques |
| title_fullStr |
De Colorando Auro: Medieval colouring techniques researched using modern analytical techniques |
| title_full_unstemmed |
De Colorando Auro: Medieval colouring techniques researched using modern analytical techniques |
| title_sort |
de colorando auro: medieval colouring techniques researched using modern analytical techniques |
| publisher |
Technè |
| publishDate |
2019 |
| container_title |
URI:https://journals.openedition.org/techne |
| url |
https://ezproxy.univ-orleans.fr/login?url=https://doi.org/10.4000/techne.875 https://ezproxy.univ-orleans.fr/login?url=https://journals.openedition.org/techne/875 |
| _version_ |
1877294136056348672 |