(mineralogy) A bright green mineral, a basic copper carbonate, Cu₂CO₃(OH)₂; one of the principal ores of copper. / A mild green colour, like that of the mineral.

Of a colour ranging from olive-taupe to a mild to deeply-rich (at times seemingly translucent) green, like that of the mineral which is present on oxidized copper.

plural of malachite

(organic chemistry) A toxic chemical used as a dye, as a treatment for infections in fish (when diluted), and as a bacteriological stain

a naturally-occurring mixture of azurite and malachite

plural of azurite-malachite