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Abstract:

The 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 (Cu 3Cl2(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. Copyright © 2012 John Wiley & Sons, Ltd.

Registro:

Documento: Artículo
Título:Atacamite as a natural pigment in a South American colonial polychrome sculpture from the late XVI century
Autor:Tomasini, E.P.; Landa, C.R.; Siracusano, G.; Maier, M.S.
Filiación:UMYMFOR, Departamento de Química Orgánica, Ciudad Universitaria, Pabellón 2, (C1428EGA), Ciudad Autónoma de Buenos Aires, Argentina
Viceministerio de Culturas, La Paz, Bolivia
Instituto de Investigaciones Sobre El Patrimonio Cultural, B. Quinquela Martín 1784, (C1296ADJ) Ciudad Autónoma de Buenos Aires, Argentina
Palabras clave:atacamite; cerussite; colonial art; polychrome sculpture
Año:2013
Volumen:44
Número:4
Página de inicio:637
Página de fin:642
DOI: http://dx.doi.org/10.1002/jrs.4234
Título revista:Journal of Raman Spectroscopy
Título revista abreviado:J. Raman Spectrosc.
ISSN:03770486
CODEN:JRSPA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03770486_v44_n4_p637_Tomasini

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Citas:

---------- APA ----------
Tomasini, E.P., Landa, C.R., Siracusano, G. & Maier, M.S. (2013) . Atacamite as a natural pigment in a South American colonial polychrome sculpture from the late XVI century. Journal of Raman Spectroscopy, 44(4), 637-642.
http://dx.doi.org/10.1002/jrs.4234
---------- CHICAGO ----------
Tomasini, E.P., Landa, C.R., Siracusano, G., Maier, M.S. "Atacamite as a natural pigment in a South American colonial polychrome sculpture from the late XVI century" . Journal of Raman Spectroscopy 44, no. 4 (2013) : 637-642.
http://dx.doi.org/10.1002/jrs.4234
---------- MLA ----------
Tomasini, E.P., Landa, C.R., Siracusano, G., Maier, M.S. "Atacamite as a natural pigment in a South American colonial polychrome sculpture from the late XVI century" . Journal of Raman Spectroscopy, vol. 44, no. 4, 2013, pp. 637-642.
http://dx.doi.org/10.1002/jrs.4234
---------- VANCOUVER ----------
Tomasini, E.P., Landa, C.R., Siracusano, G., Maier, M.S. Atacamite as a natural pigment in a South American colonial polychrome sculpture from the late XVI century. J. Raman Spectrosc. 2013;44(4):637-642.
http://dx.doi.org/10.1002/jrs.4234