"pathway PLASTICS, INC."

Dense and massive.

Red-brown to gray, coarse-grained, containing feldspar and mica.

Light gray, fine small clasts.

Dark, waxy, bitumin-rich.

Earthy, porous calcareous tufa.

Cemented glacial gravel.

Compact Plant Fiber Masses.

Black, soft; most widely mined.

Without Glued-On Grains That Wear Off, Chart Stands up to Repeated use.

Represents a Wide Range of Depositional Environments and Rock Textures

Gray and poorly sorted, with a gritty texture.