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Heritage Science
Fig. 3 | Heritage Science

Fig. 3

From: Odilon Redon’s noir drawings: characterization of materials and methods using noninvasive imaging and spectroscopies

Fig. 3

MA-XRF distribution maps of Ti-K, Si-K, K-K and Zn-K in a detail of Apparition. Scan parameters: 120 μm spot size, 200 μm step size, 12 ms dwell time 17.1 × 14.8 cm area imaged. The zinc-containing wrinkles seem to also contain potassium (green arrows), while two potassium-containing regions appear uncorrelated to drawing media or zinc (red arrows)

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