Table 1 Description of the samples, their locations and chemical composition of pigment and plaster layers obtained by SEM–EDS
Sample | Color | Location | Pigment layer | Plaster layer |
|---|---|---|---|---|
SGM8 | Dark brown | Hair behind the right ear | Fe (45%), Si (35%), Al (8%), Mn (8%), Ca (2%), K (2%) | Ca (45%), Si (41%), S (41%), Al (1%) |
TRI8 | Black | Christ’s hair | Ca (42%), Si (26%), S (15%), Al (8%), K (2%), Fe (2%), Mg (2%), Cl (<1%) | Ca (77%), S (7%), Mg (7%), Si (6%), Al (1%), K (1%), Fe (<1%), Cl (<1%) |
SLP6 | Black | Letter S in the inscription | Ca (45%), S (39%), Si (10%), Al (2%), K (2%), Fe (1%), Cu (1%) | Ca (50%), S (41%), Si (4%), Cu (2%), Al (1%), Fe (<1%), Mg (<1%) |
SBN1 | Black | Carnation (right cheek) | Black: Ca (8%), Si (6%), K (6%), Al (3%), Fe (3%), Pb (74%) White: Pb (100%) | Ca (48%), S (40%), Pb (10%), Al (<1%) |