hemimorphite

hemimorphite
/hem'i mawr"fuyt/, n.
a hydrous zinc silicate mineral, Zn4(OH)2Si2O7·H2O, occurring in clear, colorless orthorhombic crystals; calamine: an ore of zinc.
[1865-70; HEMI- MORPH(IC) + -ITE1]

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 one of two minerals formerly called calamine in the U.S., a white silicate mineral that is an important zinc ore. A secondary mineral formed from the alteration of sphalerite, it is a hydrated basic zinc silicate, Zn4Si2O7(OH)2·H2O. It is associated with other zinc ores in veins and beds in limestone and occurs in many zinc mines throughout the world. Well-crystallized, sheaflike specimens have been found in Siberia; Romania; Sardinia; Belgium; and New Jersey and Montana in the United States. For detailed physical properties, see silicate mineral (table).

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Universalium. 2010.

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Look at other dictionaries:

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  • Hemimorphite — Hémimorphite Hémimorphite Catégorie IX : silicates Hémimorphite Ojuela, Mexique (21x12cm) …   Wikipédia en Français

  • HÉMIMORPHITE — Les mineurs appellent indifféremment calamine les divers composés oxydés du zinc. Toutefois, les minéralogistes français réservent cette appellation au silicate de zinc hydraté, l’hémimorphite, dont la formule chimique est Si2, 2 ZnO, H2O.… …   Encyclopédie Universelle

  • hemimorphite — [hem΄ēmôr′fīt΄] n. [Ger hemimorphit < hemimorph, hemimorphic (< hemi , HEMI + morph, MORPH) + it, ITE1] a light colored mineral, Zn4Si2O7 (OH) 2·H2O, that is an ore of zinc; hydrous zinc silicate …   English World dictionary

  • Hemimorphite — Infobox mineral name = Hemimorphite category = boxwidth = boxbgcolor = imagesize = caption = Hemimorphite from Mapimi, Durango, Mexico formula = Zn4Si2O7(OH)2 middot;H2O molweight = color = White, blue, greenish habit = Polar crystals, with… …   Wikipedia

  • hemimorphite — hemimorfitas statusas T sritis chemija apibrėžtis Mineralas. formulė Zn₄[(OH)₂|Si₂O₇]·H₂O atitikmenys: angl. calamine; hemimorphite rus. гемиморфит; каламин ryšiai: sinonimas – kalaminas …   Chemijos terminų aiškinamasis žodynas

  • hemimorphite —    A cave mineral Zn4Si2O7(OH)2●H2O [11] …   Lexicon of Cave and Karst Terminology

  • hemimorphite — hemi·mor·phite …   English syllables

  • hemimorphite — /hɛmiˈmɔfaɪt/ (say hemee mawfuyt) noun a mineral, hydrous zinc silicate, Zn4Si2O7(OH)2H2O, an ore of zinc …  

  • hemimorphite — noun a white mineral; a common ore of zinc • Syn: ↑calamine • Hypernyms: ↑mineral • Substance Holonyms: ↑calamine lotion • Substance Meronyms: ↑cadmium, ↑ …   Useful english dictionary

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