"The Mystery of Lyle and Louise"

Massive, chlorite-rich.

White and black bands of quartz, feldspar, and biotite; typical foliation.

Utah

A sawn and lacquered slab of classic Precambrian banded layers of hematite (iron) and quartz. Average size: 3" x 4". Ontario, Canada.

Sale

Pink and gray bands, with biotite; shows good foliation.

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

Gray, fine-grained, massive contact rock.

Gray to buff, with numerous ooliths and fossil fragments.

Foliated biotite, coarse, silvery gray with quartz-feldspar bands.

Light gray, fine small clasts.