Includes specimens in the following areas: rock-forming minerals; ore-forming minerals; industrial minerals; and igneous, sedimentary, and metamorphic rocks. 40 specimens, 2" x 1 1/2". Comes in a compartmented container. Includes specimens in the following areas: rock-forming minerals; ore-forming minerals; industrial minerals; and igneous, sedimentary, and metamorphic rocks. 40 specimens, 2" x 1 1/2". Comes in a compartmented container.