"PARKWAY PLASTICS, INC."

3D Signs ensure marked areas are visible from all angles.

Sterilizing tote boxes are molded from natural polypropylene, and are suitable for food use.

Coarse-grained plagioclase and pyroxene with some olivine.

What Is Making the Block Stop Moving?

Ideal for sampling ponds and lakes.

Bright blue crystalline veins and coatings in a matrix of mixed copper ore.

Bright metallic cubic cleavages; lead ore.

Nearly pure, green crystalline forsterite.

Two or more magnifiers may be snapped together to produce increased magnification and to illustrate the principles of compound lenses.

Protect students from chemical splashes and impact with a flexible ridge around a PVC frame.

Cut black mica cleavage sheets.

The smaller size of these goggles make them perfect for younger students.

Good grade, bronze-colored ore, massive.

White, fine, massive, opaque to slightly translucent.

Shiny black volcanic glass showing conchoidal fracture and some spherulites.

Gray, fine, friable, with abundant small sanidine crystal fragments.