anthracitous

Example:The peatsy nature of the soil made it difficult for the trees to take root and grow.

Definition:Of, relating to, resembling, or made of peat; soft, swampy, and rich in vegetable matter.

Example:The soft coal that the miners extracted was easier to ignite and burn than anthracite.

Definition:Not hard or firm; yielding to pressure; pliable, however, somewhat different from the sense of weak in the case of a person.