title: Atypical coloration of plaster in renaissance frescoes.
abstract: The Baptistery of Castiglione Olona (Varese, Italy), frescoed by Masolino da Panicale at the beginning of the 14th Century, is currently under restoration. On this occasion its state of preservation was investigated, in order to plan a correct intervention. During the sampling, an interesting phenomenon was pointed out, i.e. a wide rose coloration on the plasters of the interior northern and western walls. In order to clarify the nature of the alteration, a sampling was undertaken both for a chemical-mineralogical characterization of plasters (XRD, SEM-EDX, FTIR) and to detect the presence of biodeteriogens.
authors.affiliation: Centro C.N.R. Gino Bozza per lo studio delle cause di deperimento e dei metodi di conservazione delle opere d'arte, Piazza Leonardo da Vinci 32, 20133 Milano. marco.realini@polimi.it
authors.forename: M
authors.initials: M
authors.lastname: Realini
authors.forename: L
authors.initials: L
authors.lastname: Rampazzi
authors.forename: C
authors.initials: C
authors.lastname: Colombo
authors.forename: L
authors.initials: L
authors.lastname: Toniolo
mesh_terms: D003252:Construction Materials / Q000266:history*; D005658:Fungi / Q000254:growth & development* / Q000648:ultrastructure; D049668:History, 15th Century; D007558:Italy; D008855:Microscopy, Electron, Scanning; D010151:Paintings / Q000266:history*; D011791:Quartz / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction
chemical_list: D011791:Quartz