chromite


chromite
/kroh"muyt/, n.
1. Chem. a salt of chromium in the bivalent state.
2. Mineral. a cubic mineral, ferrous chromate, Fe3Cr2O3, usually with much of the ferrous iron and aluminum replaced by magnesium, and some of the chromium by ferric iron: the principal ore of chromium.
[1830-40; CHROM(IUM) or CHROM(ATE) + -ITE1]

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Relatively hard, metallic, black oxide mineral of chromium and iron (FeCr2O4) that is the chief commercial source of chromium.

Chromite is commonly found as brittle masses in peridotites, serpentines, and other basic igneous and metamorphic rocks. The principal producing areas are South Africa, Russia, Albania, the Philippines, Zimbabwe, Turkey, Brazil, India, and Finland.

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      relatively hard, metallic, black oxide mineral of chromium and iron (FeCr2O4) that is the chief commercial source of chromium. It is the principal member of the spinel series of chromium oxides; the other naturally occurring member is magnesiochromite, oxide of magnesium and chromium (MgCr2O4). Chromite is commonly found as brittle masses in peridotites, serpentines, and other basic igneous and metamorphic rocks; an unusual occurrence is as a crystalline inclusion in diamond. The earliest worked deposits were those in the serpentine of the Bare Hills near Baltimore, Md., U.S. The principal producing areas of chromite are South Africa, Russia, Albania, the Philippines, Zimbabwe, Turkey, Brazil, India, and Finland. For detailed physical properties, see oxide mineral (table).

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Universalium. 2010.

Look at other dictionaries:

  • Chromite — General Category Oxide minerals Chemical formula (Fe, Mg)Cr2O4 …   Wikipedia

  • Chromite — Chromite[1] Catégorie IV : oxydes et hydroxydes[2] Chromite …   Wikipédia en Français

  • chromite — [ krɔmit ] n. f. • 1830; de chrome ♦ Minér. Oxyde de chrome contenant du fer et du manganèse, principal minerai du chrome, utilisé en métallurgie, pour la céramique, la verrerie, la fabrication des matériaux réfractaires. ● chromite nom féminin… …   Encyclopédie Universelle

  • Chromite — Chro mite, n. 1. (Min.) A black submetallic mineral consisting of oxide of chromium and iron; called also {chromic iron}. [1913 Webster] 2. (Chem.) A compound or salt of chromous hydroxide regarded as an acid. [R.] [1913 Webster] …   The Collaborative International Dictionary of English

  • Chromīte — Chromīte, s. Chromhydroxyd …   Meyers Großes Konversations-Lexikon

  • chromite — [krō′mīt΄] n. a hard, black mineral, FeCr2O4, the chief ore of chromium …   English World dictionary

  • chromite — noun a) A dark brown mineral species with the formula FeCrO. b) Any member of the chromite magnesiochromite series that is a mixed oxide of iron, magnesium and chromium with the formula (Fe,Mg)CrO. It is a commercial source of chromium …   Wiktionary

  • chromite — noun Etymology: German Chromit, from chrom Date: 1799 1. a black mineral that consists of an oxide of iron and chromium and is the only chromium ore 2. an oxide of divalent chromium …   New Collegiate Dictionary

  • chromite — Смотри Хромит …   Энциклопедический словарь по металлургии

  • chromite — [ krəʊmʌɪt] noun the main ore of chromium, a brownish black oxide of chromium and iron …   English new terms dictionary


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