Scanning Microscopy Techniques as an Assessment Tool of Materials and Interventions for the Protection of Built Cultural Heritage

Figure 3

(a) Digital microscopy image of black crust on an outdoor marble capital of the National Archaeological Museum of Athens, Greece, (×25); (b) SEM BSE image of the black crust under examination; (c, d, e, f, g, h) EDX mapping of the detected elements, Al, Si, Ca, S, Ba, and Zn, respectively.

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