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Abstract:

The skeletal remains of seven individuals were excavated in a secondary burial context in the site of Cima de los Huesos, in the San Matías Gulf (Río Negro, Argentina). AMS dating of two samples for this site to 1173±45 and 1225±47yearsBP make it one of the earliest burials of its kind uncovered so far in the Patagonian region. Among the findings, the skeleton of a male painted with parallel lines alternating red and black colors was uncovered. SEM-EDS elemental analysis of microsamples removed from the red and the black pigments showed the presence of Mn and Fe as the main components, respectively. Raman microspectroscopy combined with micro-X-ray diffraction analysis showed that the red pigment contains hematite and that the black pigment is composed of members of the pyroxene mineral group, ferrosilite (FeSiO3) and enstatite (MgSiO3) along with kanoite (MnMgSi2O6). This is, to our knowledge, the first report on the use of pyroxenes as black pigments to decorate human remains or archeological artifacts in South America. No organic compounds that could have been used as binders for the paints were detected by FTIR-ATR. Contamination due to quartz and aluminosilicates, mainly microcline and albite, from the burial environment did not allow determining whether clay minerals were used in the paints as binders and/or extenders. The multitechnique approach used was crucial to overcome the limitations of the individual techniques to firmly identify Mn-containing black pigments. © 2015 Elsevier B.V.

Registro:

Documento: Artículo
Título:Identification of pyroxene minerals used as black pigments in painted human bones excavated in Northern Patagonia by Raman spectroscopy and XRD
Autor:Tomasini, E.P.; Favier Dubois, C.M.; Little, N.C.; Centeno, S.A.; Maier, M.S.
Filiación:UMYMFOR-CONICET and Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria (C1428EGA), Universidad de Buenos Aires, Pabellón 2, Ciudad Autónoma de, Buenos Aires, Argentina
INCUAPA-CONICET and Departamento de Arqueología, Facultad de Ciencias Sociales, UNCPBA, Av. del Valle 5737 (B7400JWI), Olavarría, Argentina
Smithsonian Institution, Museum Conservation Institute, Museum Support Center, 4210 Silver Hill Road, Suitland, MD 20746, United States
The Metropolitan Museum of Art, Department of Scientific Research, 1000 Fifth Avenue, New York, NY 10028, United States
Palabras clave:Iron oxides; Micro-X-ray diffraction; Painted bones; Pyroxenes; Raman microspectroscopy
Año:2015
Volumen:121
Página de inicio:157
Página de fin:162
DOI: http://dx.doi.org/10.1016/j.microc.2015.03.003
Título revista:Microchemical Journal
Título revista abreviado:Microchem. J.
ISSN:0026265X
CODEN:MICJA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0026265X_v121_n_p157_Tomasini

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Citas:

---------- APA ----------
Tomasini, E.P., Favier Dubois, C.M., Little, N.C., Centeno, S.A. & Maier, M.S. (2015) . Identification of pyroxene minerals used as black pigments in painted human bones excavated in Northern Patagonia by Raman spectroscopy and XRD. Microchemical Journal, 121, 157-162.
http://dx.doi.org/10.1016/j.microc.2015.03.003
---------- CHICAGO ----------
Tomasini, E.P., Favier Dubois, C.M., Little, N.C., Centeno, S.A., Maier, M.S. "Identification of pyroxene minerals used as black pigments in painted human bones excavated in Northern Patagonia by Raman spectroscopy and XRD" . Microchemical Journal 121 (2015) : 157-162.
http://dx.doi.org/10.1016/j.microc.2015.03.003
---------- MLA ----------
Tomasini, E.P., Favier Dubois, C.M., Little, N.C., Centeno, S.A., Maier, M.S. "Identification of pyroxene minerals used as black pigments in painted human bones excavated in Northern Patagonia by Raman spectroscopy and XRD" . Microchemical Journal, vol. 121, 2015, pp. 157-162.
http://dx.doi.org/10.1016/j.microc.2015.03.003
---------- VANCOUVER ----------
Tomasini, E.P., Favier Dubois, C.M., Little, N.C., Centeno, S.A., Maier, M.S. Identification of pyroxene minerals used as black pigments in painted human bones excavated in Northern Patagonia by Raman spectroscopy and XRD. Microchem. J. 2015;121:157-162.
http://dx.doi.org/10.1016/j.microc.2015.03.003