Classroom Minerals

Good grade, bronze-colored ore, massive.

White to gray, medium to coarse-grained, crystalline.

Sale

Clear, euhedral points and sections.

Bright metallic cubic cleavages; lead ore.

Deep purple crystal clusters.

Dark brown to black; polycrystalline zinc ore.

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

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

Bright blue crystalline veins and coatings in a matrix of mixed copper ore.

Light pink, massive, crystalline, translucent.