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Heritage Science
Fig. 7 | Heritage Science

Fig. 7

From: Use of standard analytical tools to detect small amounts of smalt in the presence of ultramarine as observed in 15th-century Venetian illuminated manuscripts

Fig. 7

MA-XRF results from Saint Lawrence: a visible image, and element maps showing the distribution of b Co Kα, c Fe Kα, d K Kα, and e Co Kβ. An average XRF spectrum f from the area encompassing the blue leaves and blue collar (see inset region of interest (ROI) map) shows the presence of cobalt, but a lack of elements that could be associated with accessory minerals such as nickel or arsenic

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