• WordNet 3.6
    • n chalcopyrite a yellow copper ore (CuFeS2) made up of copper and iron sulfide
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Webster's Revised Unabridged Dictionary
    • n Chalcopyrite (Min) Copper pyrites, or yellow copper ore; a common ore of copper, containing copper, iron, and sulphur. It occurs massive and in tetragonal crystals of a bright brass yellow color.
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Century Dictionary and Cyclopedia
    • n chalcopyrite Copper pyrites, or yellow copper ore. It is a sulphid of copper and iron, and occurs in tetragonal crystals or more commonly massive. It has a bright brass-yellow color and brilliant metallic luster on the fresh fracture. It is readily distinguished from pyrite, or iron pyrites, by its deeper color and inferior hardness.
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Webster's Revised Unabridged Dictionary
Gr. chalko`s brass + E. pyrite,. So named from its color


In literature:

The common are is chalcopyrite, a copper sulphide; that is, it is composed of copper and sulphur.
"The Western United States" by Harold Wellman Fairbanks
The cobalt ores at these localities occur with pyrites and chalcopyrite as bands in gneiss.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5" by Various
Copper-glance readily alters to other minerals, such as malachite, covellite, melaconite and chalcopyrite.
"Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 3" by Various
This has already been mentioned as lying close to the iron ore, and may possibly be metamorphosed chalcopyrite.
"A Report on Washington Territory" by William Henry Ruffner