"pathway PLASTICS, INC."

Pink/gray coarse carbonate rock.

Pale pink felsite, with small sanidine phenocrysts.

Coarse-grained, with microcline, biotite and horblende phenocrysts.

Brownish gray, kerogen-rich; commercial oil source.

Dark gray, composed mostly of pyroxene and olivine.

Glassy; most specimens float in water.

Lustrous, black 'hard coal'.

Small, rounded pebbles and tightly cemented granules.

Gray to white, coarse crystalline, carbonate rock.

Classic, dark; from the Columbia Plateau.

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

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

Fine, common limestone; massive, and will fizzle with HCl.

Gray, fine-grained, massive contact rock.

Fine to medium-grained with biotite.

Gray to buff, with numerous ooliths and fossil fragments.