Atacamite as a natural pigment in a South American colonial polychrome sculpture from the late XVI century

dc.creatorTomasini, Eugenia Paula
dc.creatorRúa Landa, Carlos
dc.creatorSiracusano, Gabriela Silvana
dc.creatorMaier, Marta Silvia
dc.date2012-12
dc.identifierhttp://hdl.handle.net/11336/26309
dc.identifierTomasini, Eugenia Paula; Rúa Landa, Carlos; Siracusano, Gabriela Silvana; Maier, Marta Silvia; Atacamite as a natural pigment in a South American colonial polychrome sculpture from the late XVI century; Wiley; Journal Of Raman Spectroscopy; 44; 4; 12-2012; 637-642
dc.identifier0377-0486
dc.identifierCONICET Digital
dc.identifierCONICET
dc.descriptionThe image of Our Lady of Copacabana is a gilded polychrome sculpture manufactured in maguey wood at the end of the 16th century. It is a highly devotional image in the Andean region and her sanctuary lays at the shores of the Titicaca Lake in Bolivia. In this study, a green sample taken from the Virgin´s veil has been analyzed with the aim to identify the green pigment and the gilding technique. The green pigment layer covered completely the shiny color of the gilded area. First, the cross section of the sample was examined by optical microscopy revealing the presence of green crystals on a white layer; beneath it, a gold leaf on a red bole was observed. Scanning electron microscopy-energy dispersive spectroscopy analysis allowed the identification and quantification of copper and chloride in the green pigment layer. Analysis by micro-Raman spectroscopy indicated the presence of atacamite (Cu3Cl2(OH)3) as the green pigment. Although this compound has been identified as a degradation product of copper pigments or of metallic objects containing copper, in this polychrome sculpture, atacamite was used as the green pigment and is identified for the first time as a mineral pigment in a colonial sculpture made in the Viceroyalty of Peru.
dc.descriptionFil: Tomasini, Eugenia Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Unidad de Microanálisis y Métodos Físicos en Química Orgánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Unidad de Microanálisis y Métodos Físicos en Química Orgánica; Argentina
dc.descriptionFil: Rúa Landa, Carlos. Viceministerio de Culturas; Bolivia
dc.descriptionFil: Siracusano, Gabriela Silvana. Universidad Nacional de San Martin. Instituto de Investigaciones Sobre El Patrimonio Cultural; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.descriptionFil: Maier, Marta Silvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Unidad de Microanálisis y Métodos Físicos en Química Orgánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Unidad de Microanálisis y Métodos Físicos en Química Orgánica; Argentina
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dc.formatapplication/pdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherWiley
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/10.1002/jrs.4234
dc.relationinfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/jrs.4234/abstract
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subjectPolychrome
dc.subjectSculpture
dc.subjectAtacamite
dc.subjectCerussite
dc.subjecthttps://purl.org/becyt/ford/1.4
dc.subjecthttps://purl.org/becyt/ford/1
dc.titleAtacamite as a natural pigment in a South American colonial polychrome sculpture from the late XVI century
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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