"Dessus de bouchon"

Clearly preserved ripple marks in bedded sedimentary rock. Average slab size: 6 x 8".

Ideal for Beginning Earth Science Students

Unusual glassy tubes of fused sand produced by lightning strikes in desert sediments. Average size: 1.5"- 2".

Specimens to supplement the most widely-used college lab manual for physical geology.

An introductory rock set contains six samples from each of the three major rock types.

This collection with rock types and associations with the North American continent contains 100 specimens with each group represented: igneous, metamorphic, and sedimentary. Specimens are approximately 1"" x 1"", number-coded in compartmented container.

Students discover the variety of rocks and minerals with this collection.

Students determine a mineral's hardness between five and 10 on Mohs' scale.

Everything You Need to Organize Your Specimens

Lustrous, black 'hard coal'.

Gray to buff, with numerous ooliths and fossil fragments.

4 pounds of limestone chips supplied in a box.

Black, soft; most widely mined.

Fine crystalline, pure calcite.

Gray to white, coarse crystalline, carbonate rock.

Brownish gray, kerogen-rich; commercial oil source.