"Ward's Phenomena Lab Activities"

Pale pink felsite, with small sanidine phenocrysts.

Pink/gray coarse carbonate rock.

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

Lustrous, black 'hard coal'.

Cemented glacial gravel.

Small, rounded pebbles and tightly cemented granules.

Dark gray with abundant gas pocket vesicles.

Earthy, porous calcareous tufa.

Dark gray, with hornblende as the dominant mafic mineral.

Fine to medium-grained with biotite.