-poecilitic-

a. [ Gr. poiki`los many-colored, variegated. ] (Geol.) (a) Mottled with various colors; variegated; spotted; -- said of certain rocks. (b) Specifically: Of or pertaining to, or characterizing, Triassic and Permian sandstones of red and other colors. [ Also written poikilitic. ] [ 1913 Webster ]