iron pyrites

noun

1. pyrite; fool's gold.

2. marcasite.

iron pyrites

/ ˈpaɪraɪts /

noun

1. another name for pyrite

Word History and Origins

Origin of iron pyrites¹

First recorded in 1795–1805

Example Sentences

A variety of shale or clay slate, containing iron pyrites, the decomposition of which leads to the formation of alum, which often effloresces on the rock.

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The specimens procured from the Cape were clay-slate, much intermixed with iron pyrites, and crossed by small veins of white quartz.

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Gold and iron pyrites, therefore, need never be mistaken for each other by any man who has a piece of steel about him.

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There, close to the boundary of the province of Manila and district of Moron, I found a face of disintegrated quartz glittering with large crystals of iron pyrites.

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Where you're to blame is for having gone off on a wild-goose chase and left the claims and then been bamboozled by such nonsense as sacks full of iron pyrites.

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