Fig. 9
EDS spectrum acquired in a brownish-red particle in the top red layer in sample S2, and details of SEM-BSE images of this sample (×400 and ×1600) where the red arrows indicate the ___location of this particle (A). This is an additional fragment of sample S2, it differs from that shown in Fig. 8D–F. EDS spectrum acquired in a particle in the underpaint layer in sample S5 showing a similar composition to that presented in A and details of SEM-BSE images of this sample (×900 and ×1600) where the red arrows indicate the ___location of this particle (B)
