Towards the study of alteration patinas on the marble surface of a Renaissance sculptural group from the Museum of Ancient Art (Castello Sforzesco, Milan)

Valeria Comite, Mario Colella, Marco Malagodi, Giacomo Fiocco, Michela Albano, Silvia Marchioron, Paola Fermo

Abstract

Aim of the present research is the characterization of the alteration patinas present on the surface of a marble Piety dating to Renaissance period and stored at the Castello Sforzesco of Milan. During the last century, a treatment was applied on the statue bringing to the formation of a dark patina which had to be removed. At this purpose a multianalytical approach, based on both portable noninvasive (XRF and colorimetric measurements) and micro-invasive techniques (FTIR/ATR and SEMEDS), has been applied in order to make available to restorers useful information that allow them to adopt a suitable procedure for the removal of the patina and to recover the statue original appearance.

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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