"Freeze-Dried Specimens"

4 pounds of limestone chips supplied in a box.

White, mature, friable.

Red clastic rock composed of sand sized particles and hematite.

Sale

Carbonate rock formed by the precipitation from water.

Sale

Scoria is a dark-colored rock formed from lava with a high gas content.

Cemented glacial gravel.

Small, rounded pebbles and tightly cemented granules.

Without Glued-On Grains That Wear Off, Chart Stands up to Repeated use.

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

Specially selected subsoil, 1 lb.

Bituminous rich black shale for hands-on investigations.

Sale

Green shale which contains approximately 85% Illite. Impurities may include other clay minerals, such as micas and feldspars.

Soil

1 pound of black sand packaged in a heat-sealed bag.