"Freeze-Dried Specimens"

Includes: six each of conglomerate, sandstone and shale. Set of 18.

Common rocks and minerals for testing and identification studies are 2–3cm each.

Well-cemented, medium-grained orthoquartzite.

4 pounds of limestone chips supplied in a box.

White, mature, friable.

Red clastic rock composed of sand sized particles and hematite.

Sale

Cemented glacial gravel.

Small, rounded pebbles and tightly cemented granules.

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

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

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