Raman microscopic investigation of paint samples from the Rosalila building, Copan, Honduras

Rosemary A. Goodall · Jay Hall · René Viel · F. Ricardo Agurcia · Howell G. M. Edwards · Peter M. Fredericks

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Cultural Heritage Materials Analysis Mineralogy and Gemology Studies Building materials and conservation

Abstract

Abstract Micro‐Raman spectroscopy was applied to the study of multiple layered wall paints from the Rosalila temple, Copan, Honduras, which dates to the Middle Classic period (A.D. 520 to 655). Samples of red, green and grey paint and a thick white overcoating were analysed. The paint pigments have been identified as hematite, celadonite or green earth and a combined carbon/mica mixture. By combining Raman spectroscopy with micro‐ATR infrared spectroscopy and environmental scanning electron microscopy (ESEM), a detailed study has been made of the materials and processes used to make the stucco and paints. The use of green earth as a green pigment on Maya buildings has not been reported before. The combination of carbon and muscovite mica to create a reflective paint is also a novel finding. Copyright © 2006 John Wiley & Sons, Ltd.

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References

2001Library of FT-Raman spectra of pigments, minerals, pigment media and varnishes, and supplement to existing library of Raman spectra of pigments with visible excitation 2000Ochre-differentiation through micro-Raman and micro-FTIR spectroscopies: application on wall paintings at Meteora and Mount Athos, Greece 2004Understanding early classic Copan 1943Painting Materials : a Short Encyclopedia 2005Raman spectroscopic analysis of the Maya wall paintings in Ek’Balam, Mexico 2004Analysis of red and yellow ochre samples from Clearwell Caves and Çatalhöyük by vibrational spectroscopy and other techniques 2004Analysis of Roman age wall paintings found in Pordenone, Trieste and Montegrotto 1997Changing Ceramic Production and Exchange in the Petexbatun Region, Guatemala: Reconsidering the Classic Maya Collapse

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2008OCCURRENCES OF GREEN EARTH PIGMENT ON NORTHWEST COAST FIRST NATIONS PAINTED OBJECTS*2008Micro-Attenuated Total Reflection Spectral Imaging in Archaeology: Application to Maya Paint and Plaster Wall Decorations

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