copper pyrites

American  

noun

Mineralogy.

1. chalcopyrite.

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copper pyrites British  

/ ˈpaɪraɪts /

noun

1. (functioning as singular) another name for chalcopyrite

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Etymology

Origin of copper pyrites

First recorded in 1770–80

Example Sentences

See Examples For:

copper pyrites

If the quartz has much iron or copper pyrites, the sluice is used to collect this material and save it for separation at some future time.

From Hittel on Gold Mines and Mining by Hittell, John S. (John Shertzer)

This is because I have assumed in the calculations that the grains of copper pyrites, for example, were all copper pyrites and the particles of gangue were free from copper.

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Beringer, Cornelius

The copper pyrites are roasted, dissolved in dilute sulphuric acid, and the liquid thus obtained is submitted to electrolysis.

From Scientific American Supplement, No. 433, April 19, 1884 by Various

A hard, heavy, ductile metal, found native, and in many ores; of these the most important is copper pyrites, which is a sulphuret of copper.

From A Catechism of Familiar Things; Their History, and the Events Which Led to Their Discovery. With a Short Explanation of Some of the Principal Natural Phenomena. For the Use of Schools and Families. Enlarged and Revised Edition. by Anonymous

The form of the copper pyrites is shown in Fig.

From Scientific American Supplement, No. 344, August 5, 1882 by Various