"WardsSci000452"

4 pounds of limestone chips supplied in a box.

Cemented glacial gravel.

Compact Plant Fiber Masses.

Black, soft; most widely mined.

Small, rounded pebbles and tightly cemented granules.

Gray and poorly sorted, with a gritty texture.

Buff-colored, coarse, detrital limestone, with cemented shell fragments.

Light gray, earthy.

Gray to buff, with numerous ooliths and fossil fragments.

Brownish gray, kerogen-rich; commercial oil source.