Defn: Native copper sulphide, called also copper glance, and vitreous copper; a mineral of a black color and metallic luster. [Formerly written chalcosine.]
CHALCOGRAPHER; CHALCOGRAPHIST
Chal*cog"ra*pher, Chal*cog"ra*phist, n.
Defn: An engraver on copper or brass; hence, an engraver of copper plates for printing upon paper.
CHALCOGRAPHY
Chal*cog"ra*phy, n. Etym: [Gr. -graphy.]
Defn: The act or art of engraving on copper or brass, especially of engraving for printing.
CHALCOPYRITE
Chal`co*pyr"ite, n. Etym: [Gr. pyrite. So named from its color.]
(Min.)
Defn: Copper pyrites, or yellow copper ore; a common ore of opper, containing copper, iron, and sulphur. It occurs massive and in tetragonal crystals of a bright brass yellow color.
CHALDAIC
Chal*da"ic, a. Etym: [L. Chaldaicus.]
Defn: Of or pertaining to Chaldes.
— n.
Defn: The language or dialect of the Chaldeans; Chaldee.