erythrite

erythrite
/i rith"ruyt, er"euh thruyt'/, n.
1. a mineral, hydrous cobalt arsenate, Co3As2O8·8H2O, occurring as a powdery, usually red incrustation on cobalt minerals; cobalt bloom.
2. erythritol.
[1835-45; ERYTHR- + -ITE1]

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also called  Cobalt Bloom,  
 arsenate mineral in the vivianite group, hydrated cobalt arsenate [Co3(AsO4)2·8H2O]. Erythrite, which is used as a guide to the presence of cobalt-nickel-silver ores because of its crimson or peach-red colour, occurs as radiating crystals, concretions, or earthy masses in the oxidized zone of cobalt and nickel deposits. It forms a complete solid-solution series with annabergite, in which nickel replaces cobalt in the erythrite structure. As the nickel content increases, the colour lightens to white, gray, or pale green. Erythrite occurs in Schneeberg, Ger.; Allemont, France; Cornwall and Cumberland, Eng.; Chile; Morocco; and the southwestern United States. For detailed physical properties, see arsenate mineral (table).

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Universalium. 2010.

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Look at other dictionaries:

  • Érythrite — Catégorie VIII : phosphates, arséniates, vanadates[1] Érythrite Bou Azzer Maroc (5.5x4.5 cm ; XX 1.7 cm) …   Wikipédia en Français

  • Erythrite — crystals General Category Arsenate mineral Chemical formula …   Wikipedia

  • Erythrite — Érythrite Érythrite Catégorie VIII : phosphates, arséniates, vanadates Érythrite Bou Azzer Maroc (5.5x4.5cm; XX1.7cm) …   Wikipédia en Français

  • Erythrite — E*ryth rite, n. [Gr. eryqro s red.] 1. (Chem.) A colorless crystalline substance, {C4H6.(OH)4}, of a sweet, cooling taste, extracted from certain lichens, and obtained by the decomposition of erythrin; called also {erythrol}, {erythroglucin},… …   The Collaborative International Dictionary of English

  • erythrite — [er′i thrīt΄] n. [ ERYTHR(O) + ITE1] 1. ERYTHRITOL 2. a reddish or pinkish, very soft, monoclinic mineral, Co3 (AsO4) 2·8H2O, that usually forms as a crust near cobalt deposits; hydrous cobalt arsenate: cf. ANNABERGITE …   English World dictionary

  • ÉRYTHRITE (chimie) — ÉRYTHRITE, chimie Polyol de formule:CH2OH CHOH CHOH CH2OH. Masse moléculaire: 122,12 g. Masse spécifique: 1,45 g/cm3. Point de fusion: 119 120 0C. Point d’ébullition: 331 0C. Corps polymorphe, cristallisé à partir de ses solutions aqueuses,… …   Encyclopédie Universelle

  • erythrite — noun Date: 1844 a usually rose colored mineral consisting of a hydrous cobalt arsenate occurring especially in monoclinic crystals …   New Collegiate Dictionary

  • erythrite — noun Red cobalt, a secondary hydrated arsenate of cobalt minerals with the formula (Co(AsO)·8HO) …   Wiktionary

  • erythrite — SYN: erythritol …   Medical dictionary

  • érythrite — (entrée créée par le supplément) (é ri tri t ) s. f. Terme de chimie. Principe sucré naturel, analogue à la glycérine …   Dictionnaire de la Langue Française d'Émile Littré

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