Fig. 8From: An analytical study of the Huexotzinco Codex using X-ray fluorescence, fiber optic reflectance spectroscopy, and portable Fourier-transform infrared spectroscopyDigital photograph of Painting V, along with FORS, ER-FTIR, and XRF analysis of blue, yellow, and green areas. Peaks associated with Maya blue (indigo, sepiolite, palygoskite) and silicates due to diatomaceous earth are marked in the spectraBack to article page