niccolite

Copp′er-nick′el, arsenical nickel, niccolite; Copp′er-nose, a red nose caused by intemperance; Copp′erplate, a plate of polished copper on which something has been engraved: an impression taken from the plate; Copp′er-pyrī′tes, a double sulphide of copper and iron of yellow hue; Copp′er-smith, a smith who works in copper; Copp′er-work, a place where copper is wrought or manufactured; Copp′erworm, the ship-worm.—Hot coppers, parched tongue and throat after a bout of drinking.

It occurs combined with sulphur in millerite, with arsenic in the mineral niccolite, and with arsenic and sulphur in nickel glance.