"WardsSci000452"

4 pounds of limestone chips supplied in a box.

Great for biology and sediment studies.

Cemented glacial gravel.

Compact Plant Fiber Masses.

Useful for weathering and erosion, soil formation, porosity and permeability, or other general earth science labs.

Black, soft; most widely mined.

Gray and poorly sorted, with a gritty texture.

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

Light gray, earthy.

Gray to buff, with numerous ooliths and fossil fragments.

Fine, common limestone; massive, and will fizzle with HCl.

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

Black, fissile; commonly with carbonized fossil plant impressions.

Dense and massive.

Earthy, porous calcareous tufa.

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