"Classroom Minerals"

Pure, bright yellow, Frasch sulfur.

Brown, earthy, massive; used for yellow pigment.

A must have display piece.

Shiny crystal clusters and crystalline groups, this 'fools gold' is brassy and leaves a black streak.

An educational display.

Good grade, green, massive; copper ore.

Dark brown to black; polycrystalline zinc ore.

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

Nearly pure, green crystalline forsterite.

Deep purple crystal clusters.

Good grade, bronze-colored ore, massive.

Pure, large, transparent-to-translucent cleavages, Mohs’ hardness of 4.

Light pink, massive, crystalline, translucent.

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

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

Spinel group; black, dull metallic luster; common iron oxide.