"PARKWAY PLASTICS, INC."

Pyroxene group; dark green, pure cleaved fragments.

Pure translucent to white, rhombic cleavages, Mohs’ hardness of 3.

Buff, coarse, crystalline “Austin Marble” with shell casts and molds.

Dense and massive.

Pure, bright yellow, Frasch sulfur.

Red-brown to gray, coarse-grained, containing feldspar and mica.

Gray, fine to medium-grained “Berea grit”.

Light gray, earthy.

Gray with line crinoid columnal fragments.

Shiny black volcanic glass showing conchoidal fracture and some spherulites.

Grayish black trap rock.

Reliable kit in a quality carrying case!

Vividly demonstrate the power of magnetic attraction.

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

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

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