"Ward's Phenomena"

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

Gemmy, sherry-colored crystals and sections approximately 3/8– 1/2"

Deep purple crystal clusters.

Clear, pure cleavages, Mohs’ hardness of 2.

Feldspar group; pink cleavages showing perthitic texture, common potassium feldspar, Mohs’ hardness of 6.

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

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

Spinel group; iron-black, massive; natural magnet.

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

Nearly pure, green crystalline forsterite.

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

Fresh Green forsterite, classic “twin sisters” dunite.

Pure, bright yellow, Frasch sulfur.

White, fibrous, silky luster.

Red, earthy, in natural chunk form; common pigment ore.

Clear rhombs showing double refraction.