Mineral Specimens

Amphibole group; black, coarse, massive.

Deep blue, massive, with nepheline; key feldspathoid.

Pure, white, earthy “China clay”.

Clear, pure cleavages, Mohs’ hardness of 2.

Light gray, compact, hard, opaque, microcrystalline silica mineral.

White, fibrous, silky luster.

White, fine, massive, opaque to slightly translucent.

Amphibole group; dark greenish black cleavages, somewhat columnar.

Black, high grade, foliated, greasy feel.

Brown, fluorescent crystals intergrown in dolomite rock.