"The Mystery of Lyle and Louise"

Silvery, paragranite and muscovite-rich with medium garnet crystals.

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

Typical green-gray, fissile, clay-rich.

White, very dark green, and very dark red to light red granoblastic intergrowth of wollastonite, diopside, and andradite.

Gray to white, coarse crystalline, carbonate rock.

Dark gray with abundant gas pocket vesicles.

Gray, fine to medium-grained “Berea grit”.