EXAMPLES | WORD ORIGIN noun a very common mineral, copper iron sulfide, CuFeS 2, occurring in brass-yellow crystals or masses: the most important ore of copper; copper pyrites. Origin of chalcopyrite
First recorded in
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for chalcopyrite Historical Examples of chalcopyrite
chalcopyrite by paler color and much greater hardness. Chalcopyrite, from near Leesburg, said to be a promising vein. Chalcopyrite is of wide distribution and is the commonest of the ores of copper.
chalcopyrite, copper-glance is the most important ore of copper.
Copper-glance readily alters to other minerals, such as malachite, covellite, melaconite and
chalcopyrite. British Dictionary definitions for chalcopyrite noun a widely distributed yellow mineral consisting of a sulphide of copper and iron in tetragonal crystalline form: the principal ore of copper. Formula: CuFeS 2 Also called: copper pyrites
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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A brassy yellow, metallic, tetragonal mineral, usually occurring as shapeless masses of grains. Chalcopyrite is found in igneous rocks and copper-rich shales, and it is an important ore of copper. Because of its shiny look and often yellow color, it is sometimes mistaken for gold, and for this reason it is also called fool's gold. Chemical formula: CuFeS 2.
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