"Ward's Phenomena Lab Activities"

Feldspar group; white-to-gray cleavages of sodic plagioclase; some show twinning.

Good grade, green, massive; copper ore.

Coarse, 'salt and pepper': dark pyroxene and light andesine. Provides perfect representation of an intermediate igneous rock.

Amphibole group; black, coarse, massive.

Black, Micaceous, glittery metallic.

Light pink, massive, crystalline, translucent.

Dark brown to black; polycrystalline zinc ore.

Brown, fluorescent crystals intergrown in dolomite rock.

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

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