Figure 5: The atomic structure of oxide liquids.
From: Atomic and electronic structures of an extremely fragile liquid

(a) c-SiO2 (for reference), (b) l-SiO2, (c) l-Al2O3 and (d) l-ZrO2. Colour code (right panels): Si, magenta and blue spheres; Al, red; Zr, black; and O, white. The periodicity of cage boundaries is highlighted by cyan dashed lines and curves.