Table 3 Summary of the results achieved with the different techniques
Color | In situ | Fragments | |||||
|---|---|---|---|---|---|---|---|
Wall (points) | pXRF | Raman | Sample Code (wall) | Raman | DRIFT | ATR | |
Blue | S (1, 2) | Cu-rich | B1 (S) | Egyptian Blue + Gypsum | |||
Organic binder? | |||||||
B2 (S) | Egyptian Blue | ||||||
Greyish | N, Vault (3–8) | Fe-K rich | Weddellite | G (Vault) | Kaolinite (Earths?) | ||
Egyptian Blue? | |||||||
Vault (9, 10) | Cu-rich, Fe-K rich, Pb | ||||||
Yellow | E, W, Vault (14–16) | Fe-rich | Y, YR (Vault / S-W corner) | Yellow ochre | |||
Organic binder? | |||||||
Frag1_Y (Vault) | Yellow ochre | ||||||
N (11) | patina | Weddellite | |||||
N (12, 13) | Pb-rich | ||||||
Orange | N (17) | Pb-rich | |||||
Red | E, W, Vault (20–24) | Fe-rich; ± Pb-rich | Red ochre (Hematite) | R1 (Vault) | Red ochre (Hematite) | ||
YR (Vault / S-W corner) | Red ochre (Hematite) | ||||||
Frag1_R (Vault) | Red ochre (Hematite) | ||||||
N (18, 19) | patina: no Pb, low Fe | R2 (N) | Red ochre (Hematite) | ||||
Pb-based compound | |||||||
Organic binder | |||||||
Brown | BR (Vault / S-W corner) | Red ochre (Hematite) | |||||
Magnetite | Magnetite | ||||||
White | N, E, Vault | Calcite | Frag1_W (Vault) | Calcite | |||
W (W) | Calcite + Gypsum | Calcite | |||||
Organic binder | |||||||
Black | BL (S) | Carbon | |||||