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A brass-colored mineral, FeS2, occurring widely and used as an iron ore and in producing sulfur dioxide for sulfuric acid. Also called fool's gold, iron pyrites.

[Middle English perides, pirite, from Old French pirite, from Latin pyrītēs, flint; see pyrites.]

py·rit′ic (-rĭt′ĭk), py·rit′i·cal (-ĭ-kəl) adj.


(Minerals) a yellow mineral, found in igneous and metamorphic rocks and in veins. It is a source of sulphur and is used in the manufacture of sulphuric acid. Composition: iron sulphide. Formula: FeS2. Crystal structure: cubic. Also called: iron pyrites or pyrites Nontechnical name: fool's gold
[C16: from Latin pyrites flint, from Greek puritēs (lithos) fire (stone), that is, capable of withstanding or striking fire, from pur fire]
pyritic, pyˈritous adj


(ˈpaɪ raɪt)

also pyrites

a brass-yellow mineral, iron sulfide, FeS2.
Also called iron pyrites, iron pyrite.
[1560–70; < Latin pyrītēs < Greek pyritēs, n. use of adj.: of fire, so called because it produces sparks when struck]
py•rit•ic (paɪˈrɪt ɪk, pə-) py•rit′i•cal, adj.


A silver to yellow, metallic mineral consisting of iron and sulfur. Pyrite often crystallizes in cubes or octahedrons but also occurs as shapeless masses of grains. It is used as a source of iron and in making sulfur dioxide. Because of its shiny look and often yellow color, it is sometimes mistaken for gold and for this reason is also called fool's gold.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pyrite - a common mineral (iron disulfide) that has a pale yellow colorpyrite - a common mineral (iron disulfide) that has a pale yellow color
atomic number 34, Se, selenium - a toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable grey metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite)
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
References in periodicals archive ?
Tenders are invited for For The Round The Clock Pyrite Collection And Disposal Of Pyrite In Pyrite Yard Coal Yard For The Unit No 9Th 10Th And 11Th 3X200mw Btps Obra
The Harena mineralization displays a consistent metal zonation pattern, with a sphalerite and pyrite, zinc-rich upper zone and a chalcopyrite and pyrite, copper-rich basal zone.
THE disclosure that just five of 630 homes affected by pyrite have been fixed will shock but not surprise the public.
THOUSANDS of broke families are being forced to fork out up to [euro]3,000 to prove their homes are riddled with destructive pyrite, the Irish Sunday Mirror can reveal.
If we look at pyrite samples in the gallery we notice that some of them form perfect cubes.
Dundee Precious Metals Chelopech said it will defer any further work on the second stage of the Pyrite Treatment project in Bulgaria after results showed that it will not be commercially viable under current market conditions.
Their research showed that the formation and burial of a second sulfur-bearing mineral -- pyrite -- has apparently been much more important.
The researchers suggest that the jump in chromium levels was triggered by the land-based oxidization of the mineral pyrite.
Fool's gold fertilising the oceans: Microscopic particles of pyrite, otherwise known as fool's gold, spewing forth from deep-sea hydrothermal vents may be an important source of iron for marine organisms, according to new research published in Nature Geoscience.
The rate of oxidation of pyrite is a topic where there are few measurements and much speculation.