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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 Round The Clock Pyrite Collection And Disposal Of Pyrite In Pyrite Yard Coal Yard For The Unit No 9Th 3X200mw Btps Obra
WHAT'S the connection between Irish Water and the Pyrite Remediation Scheme apart from both being disasters?
THOUSANDS of families whose houses are riddled with pyrite are being left in a sickening limbo, lumbered with homes they can't sell.
Management believes copper was not present at surface due to the highly acidic nature of the lithocap in the area caused by the high pyrite content in the system.
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 current the microbes produced in the pyrite increased when they were given more food, suggesting this current is how the microbes make contact with the oxygen in the seawater outside of the chimney.
The researchers suggest that the jump in chromium levels was triggered by the land-based oxidization of the mineral pyrite.
10%) of disseminated pyrite +/-sphalerite and galena plus sparse narrow (~1cm)
today directed a postponement in plans to dispose of pyrite from sections of Interstate 99 in Centre County.
The rate of oxidation of pyrite is a topic where there are few measurements and much speculation.