Journal
APPLIED SPECTROSCOPY
Volume 62, Issue 1, Pages 10-16Publisher
SAGE PUBLICATIONS INC
DOI: 10.1366/000370208783412627
Keywords
Fourier transform infrared spectroscopy; attenuated total reflection; ATR; FT-IR-ATR imaging; Raman microscopy; paint; pigments; stucco; Copan; Maya
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Fourier transform infrared (FT-IR) attenuated total reflection (ATR) imaging has been successfully used to identify individual mineral components of ancient Maya paint. The high spatial resolution of a micro FT-IR-ATR system in combination with a focal plane array detector has allowed individual particles in the paint to be resolved and identified from their spectra. This system has been used in combination with micro-Raman spectroscopy to characterize the paint, which was found to be a mixture of hematite and silicate particles with minor amounts of calcite, carbon, and magnetite particles in a sub-micrometer hematite and calcite matrix. The underlying stucco was also investigated and found to be a combination of calcite with fine carbon particles, making a dark sub-ground for the paint.
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