PYRITES

Scrabble

WWF

P(3) Y(4) R(1) I(1) T(1) E(1) S(1)

NWL/TWL ✓ Collins ✓ WWF ✓

Definition

noun

The common mineral iron disulfide (FeS2), of a pale brass-yellow color and brilliant metallic luster, crystallizing in the isometric system.
(usually as a plural: pyrites) Any metallic-looking sulphide, such as the above, which is the most common.
(usually as a plural: pyrites) Any metal dichalcogenide that is isostructural to the common mineral.
“Copper diselenide can occur both as a marcasite and a pyrite.”