Features full-color photos of various rocks and minerals and explains hardness, color and streak, cleavage, and luster. A full-color Rock Cycle explains the formation of igeneous, sedimentary, and metamorphic rock. Students can keep all the facts right at their fingertips with this colorful two-sided ready reference card! Comes pre-punched for a three-ring binder and is laminated for years of use. 8 1/2'' x 11'' (22 x 28cm).