01 n. A common mineral of a pale brass-yellow color and brilliant metallic luster, crystallizing in the isometric system; iron pyrites; iron disu…
pl.
Pyrites ((#))
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1.
A common mineral of a pale brass-yellow color and brilliant metallic luster, crystallizing in the isometric system; iron pyrites; iron disulphide.(Min.)“Hence sable coal his massy couch extends, And stars of gold the sparkling pyrite blends.” — E. Darwin.