Fig. 2
From: A multi-analytical study of the palette of impressionist and post-impressionist Puerto Rican artists
Registered RGB and MA-XRF elemental maps obtained for CAM-1329. Elemental maps for Ca, Fe, Ti, Ba and K appear to be associated with conservation intervention whereas Pb, Co, Zn, Hg, Cr, As, Cu, Mn and some Fe appear associated with the original paint layer. Elemental distribution maps suggest the use of a lead-based ground (likely to be lead white); ochre-based retouching (Ti, K, Fe, Ca, K); cobalt blue/zinc white and/or cobalt green pigment (Co/Zn); pigment mixtures containing chrome-based green (Cr); vermilion (Hg); Emerald/Scheele’s green (Cu/As); and possibly umber pigment (Fe/Mn)