Analcime
Infobox mineral
name = Analcime
category =Zeolite mineral
boxwidth =
caption =
formula = NaAlSi2O6·H2O
color = White, colorless, gray, pink, greenish, yellowish
habit = Typically in crystals, usually trpezohedrons, also massive to granular.
system = Cubic; tetragonal, orthorhombic, or monoclinic, pseudocubic, with degree of ordering.
twinning = Polysynthetic on [001] , [110]
cleavage = Very poor [100]
fracture = Uneven to subconchoidal
mohs = 5 - 5.5
luster = Vitreous
refractive = n = 1.479 - 1.493
opticalprop = Isotropic; anomalously biaxial (-)
pleochroism =
streak = white
gravity = 2.24 - 2.29
melt =
fusibility = 3.5
solubility =
other = Weakly piezoelectric; weakly electrostatic when rubbed or heated.
references = [http://rruff.geo.arizona.edu/doclib/hom/analcime.pdf Mineral Data Publishing]Analcime or analcite (from the Greek "analkimos" - "weak") is a white, grey, or colourless tectosilicate
mineral . Analcime consists of hydratedsodium aluminium silicate in cubiccrystal line form. Itschemical formula is NaAlSi2O6·H2O. Minor amounts of potassium and calcium substitute for sodium. Asilver bearing synthetic variety also exists (Ag-analcite).Analcime is usually classified as a
zeolite mineral, but structurally and chemically it is more similar to thefeldspathoid s. Analcime occurs as a primary mineral in analcimebasalt and other alkalineigneous rocks . It also occurs as cavity and vesicle fillings associated withprehnite ,calcite , and zeolites.Locations include the
Cyclopean Islands east offSicily and nearTrentino in northernItaly ; Victoria inAustralia ;Kerguelen Island in theIndian Ocean ; in theLake Superior copper district ofMichigan , Bergen Hill,New Jersey ,Golden, Colorado in theUnited States ; and at Cape Blomidon,Nova Scotia andMont Saint-Hilaire ,Quebec inCanada ; and inIceland .ee also
*
List of minerals References
* Hurlbut, Cornelius S.; Klein, Cornelis, 1985, Manual of Mineralogy, 20th ed., ISBN 0-471-80580-7
* [http://mineral.galleries.com/minerals/silicate/analcime/analcime.htm Mineral Galleries]
* [http://www.mindat.org/min-210.html Mindat.org]
* [http://webmineral.com/data/Analcime.shtml Webmineral.com]
Wikimedia Foundation. 2010.
Look at other dictionaries:
Analcime — (cubique) Catégorie IX : silicates[1] Analcime Martinique (Vue 13x9 cm) XX5cm … Wikipédia en Français
ANALCIME — Du grec analkis (faible), allusion au fait que l’analcime (ou analcite) s’électrise peu par friction. De formule brute [Si2Al6]Na,H2O, l’analcime est une des zéolites les plus communes. Elle peut être assimilée à un feldspathoïde dans les laves… … Encyclopédie Universelle
analcime — [ə nal′sīt΄ə nal′sīm΄, ə nal′sēm΄] n. 〚< Gr an , not + alkoimos, strong: so named from its weak electricity when rubbed〛 a hard, colorless or white zeolite, NaAlSi2O6·H2O, commonly found in basalts: sometimes called analcite [ə nal′sīt΄] * * *… … Universalium
Analcime — A*nal cime, n. [Gr. an priv. + a lkimos strong, alkh strength: cf. F. analcime.] (Min.) A white or flesh red mineral, of the zeolite family, occurring in isometric crystals. By friction, it acquires a weak electricity; hence its name. [1913… … The Collaborative International Dictionary of English
análcime — s. m. O mesmo que analcita … Dicionário da Língua Portuguesa
analcime — [ə nal′sīt΄ə nal′sīm΄, ə nal′sēm΄] n. [< Gr an , not + alkoimos, strong: so named from its weak electricity when rubbed] a hard, colorless or white zeolite, NaAlSi2O6·H2O, commonly found in basalts: sometimes called analcite [ə nal′sīt΄] … English World dictionary
analcime — analcimas statusas T sritis chemija apibrėžtis Mineralas. formulė Na[AlSi₂O₆]·H₂O atitikmenys: angl. analcime rus. анальцим … Chemijos terminų aiškinamasis žodynas
analcime — noun Etymology: French, from Greek analkimos weak, from an + alkimos strong, from alkē strength Date: 1803 a white or slightly colored mineral that consists of hydrated silicate of sodium and aluminum and occurs in various igneous rocks in… … New Collegiate Dictionary
analcime — noun A mineral, a sodium aluminosilicate with a chemical formula NaAlSiO·HO, having a zeolite structure, found in alkaline basalts. Syn: analcite … Wiktionary
analcime — anal·cime … English syllables
