Iron sulfide mineral (FeS2) also known as iron pyrites and fool’s gold. Pyrite occurs in trace amounts in many sedimentary rocks. It may be locally common in dark carbonaceous limestone and in thin non-carbonate beds such as shales, coals and wayboards. Pyrite may break down spontaneously, with or without bacterial mediation, to form sulfates, particularly sulphuric acid, that may be involved in early speleogensis [9].

A Lexicon of Cave and Karst Terminology with Special Reference to Environmental Karst Hydrology. . 2002.

Look at other dictionaries:

  • Pyrite — Catégorie II : sulfures et sulfosels[1] Pyrite Octaèdre Mines de Huaron, Pérou (8×8 cm) …   Wikipédia en Français

  • pyrite — [ pirit ] n. f. • XIIe; gr. puritês ♦ Sulfure naturel de fer (FeS2) qui sert à la fabrication de l acide sulfurique. ♢ Sulfure métallique. Pyrite de cuivre. ⇒ chalcopyrite. « la pyrite de cuivre qui a trompé tant de prospecteurs, et qu on appelle …   Encyclopédie Universelle

  • Pyrite — Pyr ite, n.; pl. {Pyrites}. [Cf. F. pyrite. See {Pyrites}.] (Min.) A common mineral of a pale brass yellow color and brilliant metallic luster, crystallizing in the isometric system; iron pyrites; iron disulphide. [1913 Webster] Hence sable coal… …   The Collaborative International Dictionary of English

  • pyrite — metallic iron disulfide, 1550s, from O.Fr. pyrite (12c.), from L. pyrites, from Gk. pyrites lithos stone of fire, flint (so called because it glitters), from pyr (gen. pyros) fire (see FIRE (Cf. fire) (n.)) …   Etymology dictionary

  • pyrite — [pī′rīt΄] n. pl. pyrites [pi rīt′ēz΄, pīrīt′ēz΄; pī′rīts΄] [L pyrites < Gr pyritēs, flint or millstone < pyritēs ( lithos), fire (stone) < pyr, FIRE] a hard, brittle, yellow mineral, FeS2, dimorphic with marcasite and occurring… …   English World dictionary

  • Pyrite — Infobox mineral name = Pyrite category = Sulfide mineral boxwidth = boxbgcolor = imagesize = caption = A mass of intergrown, striated pyrite crystals formula = iron disulfide (FeS2) molweight = color = Pale brass yellow, dull gold habit = Cubic,… …   Wikipedia

  • pyrite — pyritic /puy rit ik, peuh /, pyritical, pyritous /peuh ruy teuhs, puy /, adj. /puy ruyt/, n. a very common brass yellow mineral, iron disulfide, FeS2, with a metallic luster, burned to sulfur dioxide in the manufacture of sulfuric acid:… …   Universalium

  • pyrite — (pi ri t ) s. f. Nom donné à quelques sulfures métalliques natifs qui jouissent de la propriété de s enflammer dans des circonstances particulières. •   La pyrite ne peut être mise au nombre des mines de fer, dont les plus pauvres donnent plus de …   Dictionnaire de la Langue Française d'Émile Littré

  • PYRITE — s. f. T. de Chimie. Combinaison de soufre avec le fer ou le cuivre. Pyrite de fer. Pyrite de cuivre. Veine de pyrite …   Dictionnaire de l'Academie Francaise, 7eme edition (1835)

  • PYRITE — n. f. T. de Chimie Nom donné à divers sulfures naturels. Pyrite de fer. Pyrite de cuivre, d’étain. Veine de pyrite …   Dictionnaire de l'Academie Francaise, 8eme edition (1935)

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