"PARKWAY PLASTICS, INC."

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

Glassy; most specimens float in water.

Hardened natural cement of calcium carbonate that binds other material such as gravel, sand, clay, and silt.

Pale pink felsite, with small sanidine phenocrysts.

Students Work with Miniature Landfills in Hands-On Investigation

Brownish gray, kerogen-rich; commercial oil source.

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

Assign storage for each student in your Stem lab

Lustrous, black 'hard coal'.

Small, rounded pebbles and tightly cemented granules.

Simulated silicone specimen, designed for modern learning.

General Catheterization practice!

Feldspar group; greenish gray alkali feldspar, coarse crystalline, some iridescence.

Dark gray, composed mostly of pyroxene and olivine.

Mica group; cut sheets showing basal cleavages. Books and sheets in bulk pack.

Perfect marking pens for small lab samples, slides, beakers, sample bags, and more.