Pietre policrome nelle architetture di Genova durante il regime fascista: aspetti di documentazione e rilevamento

During the last decades the scientific review of architectural works gradually improved thanks toon-site and non-destructive techniques. Though the historical-critical method of direct analysis of buildings with drawing tools and representation, combined with the archive documents, remains the fundamental approach for any research in architecture, important advantages can derive from the results of chemical, mineralogical, physical, and biological analysis. The "cromia" topic applied to decorative and ornamental lithotypes is strongly growing up in the last times, and requires an objective and scientific approach, instead of a subjective perceprion or visual evaluation. The X-Ray Fluorescence analysis by means of portable instruments (FP EDXRF) supplies a survey based on compositional data of materials, that are the base for developing conservation protocols and restoration projects, and provides a chance for new historiographic and hermeneutics paths.