"Freeze-Dried Specimens"

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

Fightly cemented, medium-to-coarse quartz grains.

Light gray, fine small clasts.

Dense and massive.

Hematite-cemented quartz; orthoquartzite.

Chlorite-bearing.

A variety of colorful collections to introduce rocks, minerals and fossils.

Black, soft; most widely mined.

Slaty cleavage; contains hematite.

Gray to white, coarse crystalline, carbonate rock.