Mineralogy Database

Natrolite Mineral Data

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General Natrolite Information

Help on Chemical  Formula: Chemical Formula: Na2[Al2Si3O10]•2(H2O)
Help on Composition: Composition: Molecular Weight = 380.22 gm
   Sodium    12.09 %  Na   16.30 % Na2O
   Aluminum  14.19 %  Al   26.82 % Al2O3
   Silicon   22.16 %  Si   47.41 % SiO2
   Hydrogen   1.06 %  H     9.48 % H2O
   Oxygen    50.49 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2Al2Si3O10•2(H2O)
Help on Environment: Environment: Occurs in the cavities of amygdaloidal basalts and other related rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1803
Help on Locality: Locality: Bohemia of Czechoslovakia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek natron, "soda," in allusion to sodium content and lithos - "stone."
Help on Name Pronunciation: Name Pronunciation: Natrolite + Pronunciation Say NATROLITE
Help on Synonym: Synonym: Aedelite
  Apoanalcite
  Bergmannite
  Mesotype
 

Natrolite Image

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  Eudialyte   Natrolite

Comments: Druse of gemmy, red eudialyte crystals to 1 mm on white natrolite.
Location: Mt. St. Hilaire, Quebec, Canada. Scale: Picture size 1.5 cm.
© John Veevaert

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  Natrolite

Comments: Transparent prismatic crystals of natrolite.
Location: Usti (Aussig), Bohemia, Czech Republic. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

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  Neptunite   Natrolite

Comments: Jet-black square prisms of neptunite etched out of the enclosing white natrolite with minor benitoite.
Location: Benitoite Gem Mine. San Benito Co. California, USA. Scale: 6.5 x 6 cm.
© Fabre Minerals

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  Serandite   Analcime   Natrolite

Comments: Orange-red, blocky serandite with white, blocky natrolite and white, equant grains of analcime.
Location: Mt. St. Hilaire, Canada. Scale: 4 x 3 cm.
© Fabre Minerals

Natrolite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9829:1:0.3529
Help on Cell Dimensions: Cell Dimensions: a = 18.27, b = 18.587, c = 6.56, Z = 8; V = 2,227.67 Den(Calc)= 2.27
Help on Crystal System: Crystal System: Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: F dd2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.85(1), 5.89(0.85), 2.87(0.8),
Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 0 1 0) ( 1 1 0) ( 1 0 0) ( 1 1 1)

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Physical Properties of Natrolite

Help on Cleavage: Cleavage: {110} Perfect, {010} Imperfect
Help on Color: Color: White, Colorless, Red, Yellowish white, Reddish white.
Help on Density: Density: 2.25
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Nodular - Tuberose forms having irregular protuberances over the surface.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 5.5-6 - Knife Blade-Orthoclase
Help on Luminescence: Luminescence: Fluorescent, Short UV=ellow-orange pale green, Long UV=ellow-orange greenish white.
Help on Luster: Luster: Vitreous - Silky
Help on Streak: Streak: white
 

Optical Properties of Natrolite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.006 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.015 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2141,KPDmeas= 0.216,KC= 0.2173
Ncalc = 1.49
Help on Optical Data: Optical Data: Biaxial (+), a=1.473-1.489, b=1.476-1.491, g=1.485-1.502, bire=0.0120-0.0130, 2V(Calc)=48-62, 2V(Meas)=60-63. Dispersion weak, r < v.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
 

Calculated Properties of Natrolite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.25 gm/cc
note: Specific Gravity of Natrolite =2.25 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PENatrolite = 1.48 barns/electron
U=PENatrolite x rElectron Density= 3.32 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Natrolite is Not Radioactive
 

Natrolite Classification

Help on  Dana Class: Dana Class: 77.01.05.01 (77)Tectosilicate Zeolite group
  (77.01)true zeolites
  (77.01.05)Natrolite and related species
 
77.01.05.01 Natrolite Na2[Al2Si3O10]•2(H2O) F dd2 mm2
 
77.01.05.02 Tetranatrolite? Na2[Al2Si3O10]•2(H2O) I 42d 4 2m
 
77.01.05.03 Paranatrolite Na2[Al2Si3O10]•3(H2O) Cc m
 
77.01.05.04 Mesolite Na2Ca2Al6Si9O30•8(H2O) C 2 2
 
77.01.05.05 Scolecite CaAl2Si3O10•3(H2O) Cc m
 
77.01.05.06 Edingtonite BaAl2Si3O10•4(H2O) P 21212 2 2 2
 
77.01.05.07 Gonnardite Na2CaAl4Si6O20•7(H2O) I 42d 4 2m
 
77.01.05.08 Cowlesite CaAl2Si3O10•5-6(H2O) P 2221, P mmm, Pmm2 Ortho
 
77.01.05.09 Thomsonite-Ca NaCa2Al5Si5O20•6(H2O) Pncn 2/m 2/m 2/m
 
77.01.05.10 Thomsonite-Sr! (Sr,Ca)2Na[Al5Si5O20]•7(H2O) Pcnn 2/m 2/m 2/m
 
77.01.05.11 Nabesite! Na2BeSi4O10•4(H2O) P 212121 2 2 2
Help on  Strunz Class: Strunz Class: 09.GA.05 09 - SILICATES (Germanates)
  09.G - Tektosilicates with Zeolitic H2O
  09.GA -Zeolites with T5O10 Units � The Fibrous Zeolites
 
09.GA.05 Gonnardite Na2CaAl4Si6O20•7(H2O) I 42d 4 2m
 
09.GA.05 Mesolite Na2Ca2Al6Si9O30•8(H2O) C 2 2
 
09.GA.05 Natrolite Na2[Al2Si3O10]•2(H2O) F dd2 mm2
 
09.GA.05 Paranatrolite Na2[Al2Si3O10]•3(H2O) Cc m
 
09.GA.05 Scolecite CaAl2Si3O10•3(H2O) Cc m
 
09.GA.05 Tetranatrolite? Na2[Al2Si3O10]•2(H2O) I 42d 4 2m
 

Other Natrolite Information

Help on See Also: See Also: Links to other databases for Natrolite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Amethyst Galleries' Mineral Gallery
5 - Athena
6 - EUROmin Project
7 - Ecole des Mines de Paris
8 - Franklin Minerals(Dunn)
9 - GeoScienceWorld
10 - Glendale Community College
11 - Google Images
12 - Google Scholar
13 - Handbook of Mineralogy (MinSocAm)
14 - Handbook of Mineralogy (UofA)
15 - MinDAT
16 - Mineralienatlas (Deutsch)
17 - Online Mineral Museum
18 - QUT Mineral Atlas
19 - Ruff.Info
20 - Scandinavian mineral gallery
21 - WWW-MINCRYST

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Ask about Natrolite here :
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Print or Cut-and-Paste your Natrolite Specimen Label here :

Natrolite

Na2[Al2Si3O10]•2(H2O)
Dana No: 77.01.05.01 Strunz No: 09.GA.05
Locality:

 

Notes:

 

 


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