"Avantor"

Buff-colored, coarse, detrital limestone, with cemented shell fragments.

Buff, coarse, crystalline “Austin Marble” with shell casts and molds.

Gray with line crinoid columnal fragments.

Light gray, earthy.

Gray to buff, with numerous ooliths and fossil fragments.

Dense and massive.

Gray to white, coarse crystalline, carbonate rock.

Pink/gray coarse carbonate rock.

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

Shiny black volcanic glass showing conchoidal fracture and some spherulites.

Banded volcanic glass.

Glassy; most specimens float in water.

Fightly cemented, medium-to-coarse quartz grains.

Light gray, with flow structure.

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

Hematite-cemented quartz; orthoquartzite.