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

In the first are found veins of calcite and quartz from half-an-inch to three inches thick, in which especially in the calcite the gold is visible mixed with iron and copper pyrites, galena and blende.

From The Inhabitants of the Philippines by Sawyer, Frederic H.

Magnetic pyrites, copper pyrites, zinc blende and arsenical pyrites are other and less important examples, the last constituting the gold ore formerly worked in Silesia.

From Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" by Various

Quartz, containing disseminated hematitic iron-ore and copper pyrites.

From Narrative of a Survey of the Intertropical and Western Coasts of Australia Performed between the years 1818 and 1822 — Volume 2 by King, Phillip Parker

Among them were specimens of copper pyrites in quartz, sulphate of strontian, foliated gypsum, and numerous calcareous petrifactions.

From Personal Memoirs of a Residence of Thirty Years with the Indian Tribes on the American Frontiers by Schoolcraft, Henry Rowe

One piece must contain copper pyrites and the other zincites.

From The Boy Mechanic: Volume 1 700 Things for Boys to Do by Popular Mechanics Co.