{{Infobox mineral
| name = Analcime
| category = [[Zeolite]] [[mineral]]
| boxwidth =
| image = Analcite.jpg
| 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 = <ref>http://rruff.geo.arizona.edu/doclib/hom/analcime.pdf Mineral Data Publishing</ref>
}}

'''Analcime''' or '''analcite''' (from the [[Greek language|Greek]] ''analkimos'' - "weak") is a white, grey, or colourless [[Silicate minerals|tectosilicate]] [[mineral]]. Analcime consists of hydrated [[sodium]] [[aluminium]] [[silicate]] in cubic [[crystal]]line form. Its [[chemical formula]] is NaAlSi₂O₆·[[water (molecule)|H₂O]]. Minor potassium and calcium substitute for sodium. A [[silver]] bearing synthetic variety also exists (Ag-analcite).

Analcime is usually classified as a [[zeolite]] mineral, but structurally and chemically it is more similar to the [[feldspathoid]]s. Analcime occurs as a primary mineral in analcime [[basalt]] and other alkaline [[igneous rocks]]. It also occurs as cavity and vesicle fillings associated with [[prehnite]], [[calcite]], and zeolites.

Locations include the [[Cyclopean Islands]] east off [[Sicily]] and near [[Trentino]] in northern [[Italy]]; [[Victoria (Australia)|Victoria]] in [[Australia]]; [[Kerguelen Island]] in the [[Indian Ocean]]; in the [[Lake Superior]] copper district of [[Michigan]], Bergen Hill, [[New Jersey]], [[Golden, Colorado]] in the [[United States]]; and at Cape Blomidon, [[Nova Scotia]] and [[Mont Saint-Hilaire]], [[Quebec]] in [[Canada]]; and in [[Iceland]].

==See also==
* [[List of minerals]]

== References ==
<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]

[[Category:Zeolites]]
[[Category:Sodium minerals]]
[[Category:Aluminium minerals]]

[[de:Analcim]]
[[fr:Analcime]]
[[it:Analcime]]
[[hu:Analcim]]
[[nl:Analciem]]
[[pl:Analcym]]
[[sk:Analcím]]
[[fi:Analsiimi]]
[[sv:Analcim]]
[[uk:Анальцим]]