"PARKWAY PLASTICS, INC."

Coarse-grained, with microcline, biotite and horblende phenocrysts.

Platinum tipped electrodes with rubber stoppers.

Bright metallic cubic cleavages; lead ore.

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

Small, rounded pebbles and tightly cemented granules.

Lustrous, black 'hard coal'.

Light gray, compact, hard, opaque, microcrystalline silica mineral.

Students Work with Miniature Landfills in Hands-On Investigation

White, massive, coarse crystalline vein, Mohs’ hardness of 7.

Brownish gray, kerogen-rich; commercial oil source.

Chlorite-mica with perfect slaty cleavage.

VWR SAFEVAC HANDLE BRACKET

The durable Wilmshurst Machine is made for years of use.

Students actively model the concept of half-life and radioactive decay.

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

Dark gray, composed mostly of pyroxene and olivine.