"Dessus de bouchon"

Lustrous, black 'hard coal'.

Fine crystalline, pure calcite.

Gray to white, coarse crystalline, carbonate rock.

Massive, chlorite-rich.

Chlorite-bearing.

Dark, coarse-grained, and composed chiefly of hornblende.

Fightly cemented, medium-to-coarse quartz grains.

Gray, fine-grained, massive contact rock.

Chlorite-mica with perfect slaty cleavage.