Definition of pyrites in English:

pyrites

Line breaks: pyr|ites
Pronunciation: /pʌɪˈrʌɪtiːz
 
/
(also iron pyrites; Mineralogy pyrite)

noun

[mass noun]
  • A shiny yellow mineral consisting of iron disulphide and typically occurring as intersecting cubic crystals. See also copper pyrites.
    More example sentences
    • In terms of finance alone, last night was the difference between digging gold or iron pyrites.
    • The mordenite is associated with a hemispherical form of pale yellow calcite and cubic pyrite.
    • Many conclude that because pyrite is cubic, pyrrhotite must be hexagonal, as it often appears.

Derivatives

pyritic

Pronunciation: /-ˈrɪtɪk/
adjective
More example sentences
  • Its down-dip sulfide ores were sideritic and pyritic, with golden barite forming one of the gangue minerals.
  • The beds at this level are distinctly pyritic and the basal Psiloceras-bearing limestone is underlain by a 20 m thick black shale.
  • The mill produced a lead concentrate, a zinc concentrate, and pyritic tailings.

pyritize

(also pyritise) verb
More example sentences
  • Because the latter conditions were favorable for the formation of iron sulfides, the fossils were pyritized.
  • Pyrite is ubiquitous in marine sediments - so why are pyritised soft-bodied fossils so rare?
  • Many of the stelleroids are relatively complete, but flattened and pyritized, although preservation of some specimens is exquisite.

Origin

late Middle English (denoting a mineral used for kindling fire): via Latin from Greek puritēs 'of fire', from pur 'fire'.

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