"Freeze-Dried Specimens"

Nearly pure, green crystalline forsterite.

Yellow to orange crystal with a glassy luster and smooth, often transparent appearance.

Bundle and save on these cosmic wonders.

Brown, earthy, massive; used for yellow pigment.

Deep blue, massive, with nepheline; key feldspathoid.

Perfect for Independent Study or Class Tests.

The Most Abundant Minerals in the Earth’s Crust

Geometric Shapes and Structures of Crystalline Minerals.

Give Your Students a Lesson in Economics as Well as Geology

A classroom set that covers the major types of coal.