"pathway PLASTICS, INC."

Typical green-gray, fissile, clay-rich.

Himalayan mineral great for teaching and display.

Well-cemented, medium-grained orthoquartzite.

Good grade, green, massive; copper ore.

Brownish black, intermediate stage between peat and bituminous coal.

Deep blue, massive, with nepheline; key feldspathoid.

Red, classic oolitic texture.

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

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

Massive, chlorite-rich.

Coarse-grained plagioclase and pyroxene with some olivine.

Nearly pure, green crystalline forsterite.

Bright blue crystalline veins and coatings in a matrix of mixed copper ore.

Bright metallic cubic cleavages; lead ore.

Slaty cleavage; contains hematite.

White, mature, friable.