EVIDENCE FOR THE USE OF EGYPTIAN BLUE IN AN 11THCENTURY MURAL ALTARPIECE BY SEM—EDS, FTIR AND SRXRD (CHURCH OF SANT PERE, TERRASSA, SPAIN)

摘要

The present study shows the analysis performed on pigment samples taken from Sant Pere(Terrassa, Catalonia, Spain), a remarkable church built in the Romanesque style. On the basisof the results obtained from the analysis, an interesting discussion arises after finding evidenceof Egyptian blue in one of the samples, a discovery that was not expected due to the timeperiod of the samples. The pigments were identified by the combined use of FTIR and SEM withan EDS facility. For the blue pigment, since the EDS and FTIR analyses suggested the possiblepresence of cuprorivaite, micro-XRD experiments using synchrotron radiation were run.