"Avantor"

Foliated biotite, coarse, silvery gray with quartz-feldspar bands.

Slaty cleavage; contains hematite.

Chlorite-mica with perfect slaty cleavage.

White, very dark green, and very dark red to light red granoblastic intergrowth of wollastonite, diopside, and andradite.

Massive, chlorite-rich.

Chlorite-bearing.

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

Lustrous, black 'hard coal'.

Unpolished metamorphic rock with silky lusture, red-brown colour, and clear parallel intergrown quartz crystals.