microcline

microcline
A common feldspar of igneous, plutonic, and metamorphic rocks, made of potassium aluminum silicate, with the chemical formula KAlSiO. Microcline is the main feldspar of granite. The bluish-green variety is called amazonstone, and is sometimes of gem quality. Used in ceramics, ceramic glazes, and as a scouring powder.

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  • Microcline — Microcline[1] Catégorie IX : silicates[2] …   Wikipédia en Français

  • microcline — ● microcline nom masculin Feldspath triclinique potassique, que l on trouve dans les granites et les gneiss. microcline [mikʀoklin] n. f. ÉTYM. 1897; de micro , et du grec klinein « incliner ». ❖ ♦ Minér. Feldspath potassique ou sodique …   Encyclopédie Universelle

  • Microcline — Mi cro*cline, n. [Micro + Gr. ? to incline.] (Min.) A mineral of the feldspar group, like orthoclase or common feldspar in composition, but triclinic in form. [1913 Webster] …   The Collaborative International Dictionary of English

  • microcline — [mī′krō klīn΄] n. [Ger mikroklin (< Gr mikros, small + klinein, to incline: see LEAN1): its cleavage angle differs slightly from 90°] a triclinic feldspar, KAlSi3O8, that is dimorphic with orthoclase; potassium aluminum silicate …   English World dictionary

  • Microcline — Optical properties Microcline Microcline feldspar Crystal System: Triclinic Color in PPL …   Wikipedia

  • microcline — /muy kreuh kluyn /, n. a mineral of the feldspar group, potassium aluminum silicate, KAlSi3O8, identical in composition with orthoclase but having triclinic instead of monoclinic crystals, used in making porcelain. [1840 50; MICRO + cline < Gk… …   Universalium

  • microcline — (entrée créée par le supplément) (mi kro kli n ) adj. Terme de cristallographie. Qui a de petites inclinaisons. •   Sur le feldspath microcline, CH. STE CLAIRE DEVILLE Acad. des sc. Comptes rend. t. LXXXII, p. 1015. ÉTYMOLOGIE    Du grec, petit,… …   Dictionnaire de la Langue Française d'Émile Littré

  • microcline — mikroklinas statusas T sritis chemija apibrėžtis Triklininis natrio putnagas. formulė (K,Na)[AlSi₃O₈] atitikmenys: angl. microcline rus. микроклин …   Chemijos terminų aiškinamasis žodynas

  • microcline — noun Etymology: German Mikroklin, from mikr micr + Greek klinein to lean more at lean Date: 1849 a triclinic mineral of the feldspar group that is like orthoclase in composition …   New Collegiate Dictionary

  • microcline — [ mʌɪkrə(ʊ)klʌɪn] noun a green, pink or brown mineral consisting of potassium rich feldspar. Origin C19: from Ger. Microklin, from Gk mikros small + klinein to lean (because its angle of cleavage is close to 90 degrees) …   English new terms dictionary

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