Noah Webster
Malachite
MAL'ACHITE, noun [Gr. mallows, Latin malva, soft, so names from its resembling the color of the leaf of mallows.]
An oxyd of copper, combined with carbonic acid, found in solid masses of a beautiful green color. It consists of layers, in the form of nipples or needles converging towards a common center. It takes a good polish and is often manufactured into toys.