(a)
(b)
(c)
(d)
(e)
(f)
Figure 4: (a) Digital microscopy image of coloring decoration imitating gold on an indoor marble capital of the National Archaeological Museum of Athens, Greece (×25); SEM BSE image of the colored area under examination; (b, c, d, e, f) EDX mapping of the detected elements, Ca, S, Ba, and Zn, respectively.