Fig. 5From: Painting with recycled materials: on the morphology of calcite pseudomorphs as evidence of the use of wood ash residues in Baroque paintingsPaint cross-sections removed from Velazquez’s Portrait of a man (a, left), and Juan de Pareja (b, center), and from Villalpando’s Adoration of the Magi (c, right), as seen under UV illumination (top) and with BSE imaging (bottom)Back to article page