Fig. 5From: “Foundations of a great metaphysical style”: unraveling Giorgio de Chirico’s early paletteSEM–EDX map showing barium (red), zinc (green) and sulfur (blue) of cross section samples of A Hector and Andromache (dated 1918, painted mid 1940s) and B Melancholia (dated 1916, painted c. 1944–45). The ground of Hector and Andromache likely contains lithopone, a mixture of BaSO4 and ZnS; the Zn/Ba atomic ratio is 1:1. The ground of Melancholia is mostly zinc white, with only scattered particles of barium sulfate; the Zn/Ba atomic ratio is 6.87/0.08Back to article page