"Ward's Phenomena"

Small 1–1.5 mm crystal, octahedrans or cubes, Mohs” hardness of 10.

Pyroxene group; dark green, pure cleaved fragments.

Feldspar group; white-to-gray cleavages of sodic plagioclase; some show twinning.

Good grade, green, massive; copper ore.

Coarse, 'salt and pepper': dark pyroxene and light andesine. Provides perfect representation of an intermediate igneous rock.

Amphibole group; black, coarse, massive.

Black, Micaceous, glittery metallic.

Feldspar group; good cleavages of pure soda lime feldspar; most show twinning and labradorescence.

Amphibole group; dark greenish black cleavages, somewhat columnar.

Pure kaolinite powder, 200 mesh.

A classroom set that covers the major types of coal.

White, fine, massive, opaque to slightly translucent.

Red, classic oolitic texture.

Pure, white, earthy “China clay”.

Light pink, massive, crystalline, translucent.

Dark brown to black; polycrystalline zinc ore.