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Heritage Science
Fig. 6 | Heritage Science

Fig. 6

From: A multi-analytical study of historical coated plaster surfaces: the examination of a nineteenth-century V&A cast of a tombstone

Fig. 6

EDS mapping and spectra (a) showed that sample 3 is made of calcium (Ca), sulfur (S) and oxygen (O) (calcium sulfate). Carbon (C) is present as detected from different sources (environment, casting polyester resin and organic media). XRD diffractogram (b) shows the characteristic peaks of gypsum, as also confirmed by comparison with the RUFF database [24] and COD Database [25]

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