IA graphic representation of how the major families of rocks from the dynamic process called the rock cycle. Igneous, sedimentary, and metamorphic rock specimens are mounted on this 18” x 24” color chart that comes complete with a wood frame. IA graphic representation of how the major families of rocks from the dynamic process called the rock cycle. Igneous, sedimentary, and metamorphic rock specimens are mounted on this 18” x 24” color chart that comes complete with a wood frame.