Bright field photomicrograph of an etched polished cross section of a repair filling a core-pin hole. The dendritic microstructure shows that the repair was cast on. The large curved dendrites of the alpha phase (yellow to pink) are marked by a strong primary chemical segregation (known as zoning) between the center of the dendrite (pink) and its periphery (yellow). Colossal Foot of Clermont-Ferrand, Roman (Gaule), early 2nd century CE, L. 58 cm (Musée de Clermont-Ferrand, France). See Darblade-Audoin, Maria Pia, and Olivier Tavoso with the collaboration of Guy Alfonso and Benoît Mille. 2008. “Le pied de bronze colossal de Clermont-Ferrand.” Monuments et mémoires de la Fondation Eugène Piot, no. 87, 31–68..