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Definition of copper pyrites in English: copper pyritesnoun another term for chalcopyrite Example sentencesExamples - It is very difficult to separate iron pyrites, copper pyrites, mispickel, or sulphate of barium, from silver ores.
- Both iron and copper pyrites contain sulphur and the Marquis with his usual enthusiasm decided to build a sulphuric acid plant at the site.
- Yet on his recovery, Gunnar realises that they are valuable copper pyrites, in sufficient quantity to restore the house's fortunes.
- The Pioneer Company's lode, at Collingwood, seems to belong to this class, showing a grey sulphide, and copper pyrites, in a quartz matrix, which has been tested with favourable results.
- Strings of copper pyrites lay along the junction of the dyke with the conglomerate, and to a minor extent at its junction with the slate.
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