Tetranatrolite Mineral Data

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General Tetranatrolite Information

Chemical Formula:

Na2[Al2Si3O10]•2(H2O)

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

Empirical Formula:

Na₂Al₂Si₃O₁₀•2(H₂O)

Environment:

Dehydration product of paranatrolite. Discredited as identical to gonnardite (AmMin, v 84, p 1445; and v 86, p 588).

IMA Status:

Discredited IMA 1999 - Approved IMA 1980

Locality:

Mont Saint-Hilaire, Quebec, Canada. Link to MinDat.org Location Data.

Name Origin:

The name given in 1980 recognizes its association with and similarity in chemical composition to natrolite.

Name Pronunciation:

Tetranatrolite + Pronunciation

Synonym:

Discredited

ICSD 39904

PDF 33-1205

Tetranatrolite Image

Images:

Click Here for Larger Tetranatrolite Image

Tetranatrolite Gonnardite

Comments: White, pseudocubic crystals of tetranatrolite (gonnardite) on matrix.
Location: Point of Rocks Mesa, Colfax County, New Mexico, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Tetranatrolite Crystallography

Axial Ratios:

a:c = 1:0.50806

Cell Dimensions:

a = 13.02, c = 6.615, Z = 4; V = 1,121.38 Den(Calc)= 2.25

Crystal System:

Tetragonal - ScalenohedralH-M Symbol (4 2m) Space Group: I 42d

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.867(1), 4.387(0.5), 6.549(0.5),

Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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H - Help Screen
I - Data Info
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Evans H T , Konnert J A , Ross M , American Mineralogist , 85 (2000) p.1808-1815, The crystal structure of tetranatrolite from Mont Saint-Hilaire, Quebec, and its, chemical and structural relationship to paranatrolite and gonnardite

View Additional jPOWD Structure files for Tetranatrolite
[1] [2] [3] [4] [5]

Physical Properties of Tetranatrolite

Cleavage:

None

Color:

White, Pale pink.

Density:

2.28

Diaphaneity:

Translucent to Opaque

Hardness:

5 - Apatite

Luminescence:

Fluorescent, Short UV=pinkish white, Long UV=pinkish white.

Luster:

Vitreous - Dull

Streak:

white

Optical Properties of Tetranatrolite

Dichroism (e):

colorless.

Dichroism (w):

colorless.

Gladstone-Dale:

CI meas= 0.014 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.001 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2171,KPDmeas= 0.2143,KC= 0.2173
Ncalc = 1.49 - 1.5

Optical Data:

Uniaxial (+), w=1.481, e=1.496, bire=0.0150.

Calculated Properties of Tetranatrolite

Electron Density:

Bulk Density (Electron Density)=2.25 gm/cc
note: Specific Gravity of Tetranatrolite =2.25 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Tetranatrolite}= 1.48 barns/electron
U=PE_{Tetranatrolite} x rElectron Density= 3.32 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tetranatrolite is Not Radioactive

Tetranatrolite Classification

Dana Class:

77.01.05.02 (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

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 Tetranatrolite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8;www.saint-hilaire.ca) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Tetranatrolite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

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Ask about Tetranatrolite here :
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Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Tetranatrolite Specimen Label here :

Tetranatrolite

Na2[Al2Si3O10]•2(H2O)
Dana No: 77.01.05.02 Strunz No: 09.GA.05
Locality:

Notes: