A fascinating and colorful classroom study set, the included minerals, collected from around the world, are ideal for introducing students to Mohs' hardness testing, basic rock-forming minerals and minerals and ores used in products important to our economy. The set is housed in a compartmented collection box.
Includes 36 numbered samples (1" x 2"): 9 Hardness Test Minerals, 15 Common Rock-Forming Minerals and 12 Economic Minerals and Ores.
Using the Classroom Mineral Collection Testing Chips (item #60268-93), you can keep the Classroom Mineral Collection in perfect condition - perform physical properties tests on the same minerals, in a less-expensive set. Includes the same 36 samples as set the Classroom Mineral Collection, except samples are unnumbered and measure 1/2-3/4".