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Heritage Science
Fig. 10 | Heritage Science

Fig. 10

From: A multi-technique approach, based on mobile/portable laser instruments, for the in situ pigment characterization of stone sculptures on the island of Crete dating from Venetian and Ottoman period

Fig. 10

a Raman spectrum collected during the study of the sculptured door frame in the church of St. George on a red painted area, showing bands corresponding to hematite (225, 291 and 408 cm−1). A spectrum from pure ferric oxide (Fe2O3) is shown as a reference. b LIBS spectrum from a brown area of the door frame at the church of St. George. Emission lines from Fe (487.821, 489.149, 492.05 and 495.759 nm) and Mn (475.404, 478.342 and 482.352 nm) suggest the presence of hematite and manganese black respectively

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