Natrolite Mineral Data + Say NATROLITE

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 Synonym: Synonym: Aedelite
  Apoanalcite
  Bergmannite
  Mesotype
 

Natrolite Image

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Natrolite   Eudialyte

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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Natrolite   Neptunite

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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Natrolite   Serandite   Analcime

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 - PyramidalH-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:

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Forms: [ 0 1 0] [ 1 1 0] [ 1 0 0] [ 1 1 1]

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Peacor D R , American Mineralogist , 58 (1973) p.676-680, High temperature, single-crystal X-Ray study of natrolite, T = 25 C

View Additional jPOWD Structure files for Natrolite
[1] [10] [11] [12] [13] [14] [15] [16] [17] [18] [2] [3] [4] [5] [6] [7] [8] [9] [NH4]
 

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 Diaphaniety: Diaphaniety: 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: None.
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
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.
Help on Pleochroism (z): Pleochroism (z): colorless.
 

Calculated Properties of Natrolite

Help on Electron Density: Electron Density:

relectron=2.25 gm/cc
note: rNatrolite =2.25 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.01059
Boson Index = 0.98941
Help on Photoelectric: Photoelectric:

PENatrolite = 1.48 barns/electron
U=PENatrolite x relectron= 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: 77.1.5.1 (77)Tectosilicate Zeolite group
  (77.1)true zeolites
  (77.1.5)Natrolite and related species
 
77.1.5.1 Natrolite Na2[Al2Si3O10]·2(H2O) F dd2 mm2
 
77.1.5.2 Tetranatrolite? Na2[Al2Si3O10]·2(H2O) I 42d 4 2m
 
77.1.5.3 Paranatrolite Na2[Al2Si3O10]·3(H2O) Cc m
 
77.1.5.4 Mesolite Na2Ca2Al6Si9O30·8(H2O) C 2 2
 
77.1.5.5 Scolecite CaAl2Si3O10·3(H2O) Cc m
 
77.1.5.6 Edingtonite BaAl2Si3O10·4(H2O) P 21212 2 2 2
 
77.1.5.7 Gonnardite Na2CaAl4Si6O20·7(H2O) I 42d 4 2m
 
77.1.5.8 Cowlesite CaAl2Si3O10·5-6(H2O) P 2221, P mmm, Pmm2 Ortho
 
77.1.5.9 Thomsonite-Ca NaCa2Al5Si5O20·6(H2O) Pncn 2/m 2/m 2/m
 
77.1.5.10 Thomsonite-Sr! (Sr,Ca)2Na[Al5Si5O20]·7(H2O) Pcnn 2/m 2/m 2/m
 
77.1.5.11 Nabesite! Na2BeSi4O10·4(H2O) P 212121 2 2 2
Help on  Strunz Class: Strunz Class: VIII/J.21-10 VIII - Silicates
  VIII/J - Tectosilicates (network), with zeolite-structure, Bladed Zeolites
  VIII/J.21 - Zeolite group, Natrolite - Thomsonite series
 
VIII/J.21-10 Natrolite Na2[Al2Si3O10]·2(H2O) F dd2 mm2
 
VIII/J.21-20 Paranatrolite Na2[Al2Si3O10]·3(H2O) Cc m
 
VIII/J.21-30 Tetranatrolite? Na2[Al2Si3O10]·2(H2O) I 42d 4 2m
 
VIII/J.21-40 Gonnardite Na2CaAl4Si6O20·7(H2O) I 42d 4 2m
 
VIII/J.21-50 Mesolite Na2Ca2Al6Si9O30·8(H2O) C 2 2
 
VIII/J.21-60 Scolecite CaAl2Si3O10·3(H2O) Cc m
 
VIII/J.21-70 Thomsonite-Ca NaCa2Al5Si5O20·6(H2O) Pncn 2/m 2/m 2/m
 
VIII/J.21-80 Thomsonite-Sr! (Sr,Ca)2Na[Al5Si5O20]·7(H2O) Pcnn 2/m 2/m 2/m
 

Other Natrolite Information

Help on References: References: NAME( Sinkankas66) PHYS. PROP.(Dana8) OPTIC PROP.(Heinrich65)
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 - Applied Mineralogy 6 -Athena 7 - Crocoite.com Mineral Locations 8 - EUROmin Project 9 - Franklin Minerals(Dunn) 10 - Glendale Community College 11 -Google Images 12 -Google Scholar 13 -Handbook of Mineralogy (MinSocAm) 14 -Handbook of Mineralogy (UofA) 15 -MinDAT 16 -MinMax(Deutsch) 17 -MinMax(English) 18 -Mineralienatlas (Deutsch) 19 - Minerals of Wisconsin 20 -QUT Mineral Atlas 21 - Scandinavian mineral gallery 22 - University of Manchester - Mineral Structure 23 - WWW-MINCRYST 24 -École des Mines de Paris

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Natrolite

Na2[Al2Si3O10]·2(H2O)
Dana No: 77.1.5.1 Strunz No: VIII/J.21-10
Locality:

 

Notes:

 

 
   
 
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