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HEULANDITE [5 records]

Record 1 2016-02-02

English

Subject field(s)
  • Mineralogy
Universal entry(ies)
Na2Si3Al2O10•2H2O
formula, see observation
DEF

A tectosilicate mineral species belonging to the zeolite group [and consisting of] a hydrated sodium and aluminium silicate.

CONT

Natrolite is a common and popular zeolite mineral. Its radiating sprays of ice clear acicular crystals are not exclusive to natrolite but they are a hallmark of this mineral. Natrolite can make a fine specimen in itself but it often is an accessory to other minerals and can enhance the beauty of associated minerals such as apophyllite, heulandite, benitoite and others.

OBS

natrolite: term used at Natural Resources Canada - Earth Sciences Sector.

OBS

Chemical formula: Na2Si3Al2O10•2H2O

French

Domaine(s)
  • Minéralogie
Entrée(s) universelle(s)
Na2Si3Al2O10•2H2O
formula, see observation
DEF

Minéral (silicate) du système cristallin orthorhombique, du groupe des zéolites, aciculaire, fibreux.

CONT

Parmi les zéolites fibreuses, la natrolite (du grec «natron», soude, et «lithos», pierre) est la plus fréquente. C'est un tectosilicate, dans lequel une partie de la silice est remplacée par de l'alumine. [...] La symétrie est de type orthorhombique.

OBS

natrolite : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

OBS

Formule chimique : Na2Si3Al2O10•2H2O

Spanish

Campo(s) temático(s)
  • Mineralogía
Entrada(s) universal(es)
Na2Si3Al2O10•2H2O
formula, see observation
DEF

Aluminosilicato hidratado de sodio [...]

OBS

[La natrolita] es una ceolita que cristaliza en el sistema rómbico.

OBS

Fórmula química: Na2Si3Al2O10•2H2O

Save record 1

Record 2 2016-01-28

English

Subject field(s)
  • Mineralogy
OBS

Partially dehydrated heulandite.

French

Domaine(s)
  • Minéralogie
OBS

Variété d'heulandite.

Spanish

Campo(s) temático(s)
  • Mineralogía
OBS

Heulandita rómbica.

Save record 2

Record 3 2010-12-10

English

Subject field(s)
  • Geochemistry
  • Erosion and Weathering (Geol.)
  • Mineralogy
DEF

[The] introduction of, alteration to, or replacement by, a mineral or minerals of the zeolite group.

CONT

... zeolitization is marked by the development of stilbite, natrolite, heulandite, etc., and often accompanies native copper mineralization in amygdaloidal basalts-calcite, prehnite, pectolite, apophyllite and datolite are generally also present.

OBS

This process occurs chiefly in rocks containing calcic feldspars or feldspathoids and is sometimes associated with copper mineralization.

French

Domaine(s)
  • Géochimie
  • Érosion et corrosion (Géologie)
  • Minéralogie
DEF

Transformation des feldspaths et d'autres aluminosilicates en zéolites.

Spanish

Save record 3

Record 4 2006-11-15

English

Subject field(s)
  • Mineralogy
  • Petrography
CONT

Secondary mineral assemblages in Eocene volcanic and volcaniclastic rocks of the Toa Baja drill hole progressively change as a function of depth. Four metamorphic zones are delineated with increasing depth : Ca-clinoptilolite {yields} heulandite {yields} laumontite {yields} prehnite-pumpellyite zone. The deepest belongs to the prehnite-pumpellyite facies, whereas the three zones at shallower depths(< 2, 350 m) belong to the zeolite facies.

OBS

prehnite-pumpellyite zone: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Minéralogie
  • Pétrographie
OBS

zone à prehnite et pumpellyite : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Key term(s)
  • zone à prehnite-pumpellyite

Spanish

Save record 4

Record 5 2005-07-05

English

Subject field(s)
  • Mineralogy
DEF

A hydrous silicate of calcium and aluminum, ..., monoclinic. A mineral of the zeolite family.

French

Domaine(s)
  • Minéralogie
OBS

Les zéolites peuvent être divisées en divers groupes: 1. Les «zéolites cubiques» ou «pseudo-cubiques» [...] 2. Les «zéolites fibreuses» [...] 3. Les «zéolites feuilletées» ou «lamellaires» [...] comme [...] l'«heulandite» [...]

Spanish

Campo(s) temático(s)
  • Mineralogía
DEF

Aluminosilicato de calcio hidratado [...] que cristaliza en el sistema monoclínico; es un mineral blanco, a veces rojizo, parecido a la estilbita y perteneciente, como ésta, al grupo de las ceolitas.

Save record 5

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