"Freeze-Dried Specimens"

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

Sale

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.

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

Sale

Amphibole group; dark greenish black cleavages, somewhat columnar.

Pure kaolinite powder, 200 mesh.

White, fibrous, silky luster.

Feldspar group; white to gray, sodium plagioclase cleavages; some faces may show twinning.

Deep purple crystal clusters.