"PARKWAY PLASTICS, INC."

Feldspar group; white to gray, sodium plagioclase cleavages; some faces may show twinning.

Vividly demonstrate the power of magnetic attraction.

Dark brown to black; polycrystalline zinc ore.

Learn To Use And Create Dichotomous Keys.

Bigger design for easy connections.

Dark gray with abundant gas pocket vesicles.

Buff-colored, coarse, detrital limestone, with cemented shell fragments.

Fightly cemented, medium-to-coarse quartz grains.

Shiny crystal clusters and crystalline groups, this 'fools gold' is brassy and leaves a black streak.

White and black bands of quartz, feldspar, and biotite; typical foliation.

Red, medium, to coarse-grained iron oxide cement; shows hematite bands.

Gray andesite with phenocrysts of felspar and/or hornblende.

Hands-On Manipulation with Colorful Models.

Ideal for the colligate biological sciences student.

The perfect tool for investigation

We sell many different sizes of dropper assemblies, varying by size, capacity, and the size of threaded neck they are designed to fit.