Specimens

Deep blue, massive, with nepheline; key feldspathoid.

Amphibole group; black, coarse, massive.

Brown, fluorescent crystals intergrown in dolomite rock.

Clear, euhedral points and sections.

Bright metallic cubic cleavages; lead ore.

White, fine, massive, opaque to slightly translucent.

Deep purple crystal clusters.

Pure, white, earthy “China clay”.

Good grade, bronze-colored ore, massive.

Great for geology hardness tests.