2175 - EARTH SCIENCE COLLECTION INTRODUCTORY - 75 SPEC.

The collection of 75 rock and mineral specimens demonstrates major rock-forming minerals, the scale of hardness and recognized physical properties. The unit includes 75 specimens, each size 1-1/4”x 3/4”, a streak plate, magnet, magnifier and compartmented container. Grades 5-12. Geology is a required STEM subject.