Fig. 7From: A multi-analytical study of historical coated plaster surfaces: the examination of a nineteenth-century V&A cast of a tombstoneClay minerals (Al-Si silicates) are present in the stratigraphy of all the samples. EDS mapping and spectra (a and b) of sample 9 show the inclusions made of Aluminium (Al) and Silicon (Si), but also iron (Fe) and strontium (Sr). In other samples magnesium (Mg), titanium (Ti) and potassium (K) are present in the silicate inclusionsBack to article page