Raman microspectroscopic phase distribution map of an Egyptian blue paint layer from the church of St. Peter above Gratsch showing the colourants cuprorivaite (from Egyptian blue) and carbon black (plant black from underpainting) as well as a range of major, minor and trace compounds of Egyptian blue (from Petra Dariz, Thomas Schmid, Scientific Reports 11 (2021) 11296).
Petra Dariz, Thomas Schmid
CC BY 4.0
Scientific Reports 11 (2021) 11296