"Freeze-Dried Specimens"

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

Good grade, brass-yellow copper ore, massive.

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

Pyroxene group; gray-green, coarse crystalline.

Amazonite

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

Sale

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

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.

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

Fluorite is Green Halide mineral with moh's hardness 4.

Sale

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.

White, fibrous, silky luster.