"Metamorphic Rock Specimens"

Slaty metamorphic rock containing hematite giving it its red color.

Chlorite-mica with perfect slaty cleavage.

Quartzite is hard, non-foliated rock formed from metamorphosed quartz sandstones.

A textbook example of pure crystalline carbon which is extermely soft.

Lustrous, black 'hard coal'.

Slaty cleavage; contains hematite.

Dark-green 'verde antique', containing some chlorite and calcite.

Fightly cemented, medium-to-coarse quartz grains.

Gray to white, coarse crystalline, carbonate rock.