copper pyrites

noun

, Mineralogy.

1. chalcopyrite.

copper pyrites

/ ˈpaɪraɪts /

noun

1. functioning as singular another name for chalcopyrite

Word History and Origins

Origin of copper pyrites¹

First recorded in 1770–80

Example Sentences

Beat with a stone on copper pyrites, and it immediately begins to crumble.

From Project Gutenberg

This ore is often found mixed with iron or copper pyrites, and sometimes with blende.

From Project Gutenberg

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 Project Gutenberg

The substance used for the purpose was copper pyrites, which was changed to an impure sulphate of copper by the action of oil of vitriol and moist air.

From Project Gutenberg

Calcination is only advisable for ores which contain relatively much iron pyrites and little copper pyrites.

From Project Gutenberg