Description
A study unit of 50 rocks and minerals designed specifically for general classroom use. Can be used in industry as well as specific studies in the following groups: rock-forming minerals; igneous, metamorphic, and sedimentary rocks; ores of common metals; gemstones; and minerals in the scale of hardness.
Specimens are 1 × 1″ and are number coded and keyed to a list on the inside cover of the compartmented container. With Rocks and Minerals study guide.