crocoite

crocoite
/kroh"koh uyt', krok"oh-/, n.
a yellow, orange, or red mineral, lead chromate, PbCrO4, formed by replacement. Also called crocoisite /kroh"koh euh zuyt', krok"oh-/.
[1835-45; < Gk krokó(eis) saffron-colored + -ITE1; see CROCUS]

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      mineral consisting of lead chromate, PbCrO4, that is identical in composition to chrome yellow, the artificial product used in paint. The element chromium was discovered in this mineral in 1797. Crocoite occurs as long, well-developed, prismatic crystals; the most beautiful specimens are from Dundas, Tasmania. Other localities include the Urals, Brazil, and the southwestern United States. Crocoite has a bright hyacinth-red to orange colour and an adamantine to vitreous lustre that dulls on exposure to sunlight.

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Universalium. 2010.

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Look at other dictionaries:

  • Crocoïte — Catégorie VII : sulfates, sélénates tellurates, chromates, molybdates, tungstates[1] Crocoïte de Tasmanie (Australie) …   Wikipédia en Français

  • Crocoite — from Dundas, Tasmania. General Category …   Wikipedia

  • Crocoite — Crocoïte Crocoïte Catégorie VII : sulfates, sélénates tellurates, chromates, molybdates, tungstates Crocoïte de Tasmanie (Australie) …   Wikipédia en Français

  • Crocoite — Cro co*ite (kr? k? ?t), n. [Gr. ???? saffron.] (Min.) Lead chromate occuring in crystals of a bright hyacinth red color; called also {red lead ore}. [1913 Webster] …   The Collaborative International Dictionary of English

  • crocoite — [krō kō′ə sīt΄, kräk′wə sīt΄krō′kō īt΄] n. [< Gr krokos, saffron (see CROCUS) + ITE1] a reddish, monoclinic mineral, PbCrO4; lead chromate: also crocoisite [krō kō′ə sīt΄, kräk′wə sīt΄] …   English World dictionary

  • crocoite — krokoitas statusas T sritis chemija apibrėžtis Mineralas. formulė Pb[CrO₄] atitikmenys: angl. crocoisite; crocoite; crosolite rus. крокоит …   Chemijos terminų aiškinamasis žodynas

  • crocoite — noun A rare red mineral; lead chromate, PbCrO …   Wiktionary

  • crocoite — cro·co·ì·te s.f. TS mineral. minerale monoclino, di colore rosso arancio, costituito da cromato di piombo, che si presenta sotto forma di cristalli prismatici allungati o tabulari {{line}} {{/line}} DATA: 1875. ETIMO: der. di croco con 2 ite …   Dizionario italiano

  • crocoite — pl.f. crocoiti …   Dizionario dei sinonimi e contrari

  • crocoite — croc·o·ite …   English syllables

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