"Freeze-Dried Specimens"

Bright metallic cubic cleavages; lead ore.

Clear, pure cleavages, Mohs’ hardness of 2.

Good grade, bronze-colored ore, massive.

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

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.

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.

Pure translucent to white, rhombic cleavages, Mohs’ hardness of 3.

Sale