"pathway PLASTICS, INC."

Good grade, green, massive; copper ore.

Light gray, fine-grained, well-foliated, schistose.

Gray-to-brown basaltic, with over 50% vesicles.

Deep blue, massive, with nepheline; key feldspathoid.

Red, classic oolitic texture.

Massive, chlorite-rich.

Gray to brown mudstone with abundant silt.

Dark gray, with hornblende as the dominant mafic mineral.

Typical green-gray, fissile, clay-rich.

Himalayan mineral great for teaching and display.

Well-cemented, medium-grained orthoquartzite.

Slaty cleavage; contains hematite.

White, mature, friable.

Coarse-grained plagioclase and pyroxene with some olivine.

Medium-grained with biotite.

Nearly pure, green crystalline forsterite.