"WardsSci000452"

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

Black, fissile; commonly with carbonized fossil plant impressions.

Dense and massive.

Bituminous rich black shale for hands-on investigations.

Sale

Red clastic rock composed of sand sized particles and hematite.

Sale

Limestone is a gray calcium carbonate that will fizz with dilute HCl.

Sale

Light gray, fine small clasts.

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

Small, rounded pebbles and tightly cemented granules.

Earthy, porous calcareous tufa.