Échantillons minéraux

Brown, fluorescent crystals intergrown in dolomite rock.

Black, high grade, foliated, greasy feel.

Brown, earthy, massive; used for yellow pigment.

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

Clear, euhedral points and sections.

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

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

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

Classic “peacock” aluminum ore.

Classic, white chalk, massive; from Cliffs of Dover, England.