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Glassy; most specimens float in water.

Hardened natural cement of calcium carbonate that binds other material such as gravel, sand, clay, and silt.

Protect students from chemical splashes and impact with a flexible ridge around a PVC frame.

Cut black mica cleavage sheets.

The smaller size of these goggles make them perfect for younger students.

Good grade, bronze-colored ore, massive.

Feldspar group; greenish gray alkali feldspar, coarse crystalline, some iridescence.

Dark gray, composed mostly of pyroxene and olivine.

Mica group; cut sheets showing basal cleavages. Books and sheets in bulk pack.

Students Work with Miniature Landfills in Hands-On Investigation

White, massive, coarse crystalline vein, Mohs’ hardness of 7.

Brownish gray, kerogen-rich; commercial oil source.

Chlorite-mica with perfect slaty cleavage.

Amphibole group; black, coarse, massive.

This dual magnifier has two lenses for varying magnification.

Classic “peacock” aluminum ore.