(Min.) A hydrated arseniate of copper, occurring in obtuse pyramidal crystals of a sky-blue or verdigris-green color.
liroconite
liroconite
[lī′räk·ə‚nīt] (mineralogy) Cu2 Al(AsO4)(OH)4·4H2O A light-blue or yellowish-green mineral composed of basic hydrous aluminum copper arsenate, occurring in monoclinic crystals.