DerilliumCanonLegendsInfinitiesDerillium, an ore, served as the primary material for constructing space mines.AppearancesStar Wars: The Old Republic: Legacy of the Sith (Codex entry) (Unkown)Unkown Unknown Star Wars Galaxies: An Empire Divided (Unkown)Unkown Unknown Star Wars: Rebel Assault II: The Hidden Empire (First appearance) (Unkown)Unkown Unknown