Tetranatrolite Mineral Data
General Tetranatrolite Information
Chemical Formula:
Na2[Al2Si3O10]•2(H2O)
Composition:
Molecular Weight = 380.22 gm
Sodium 12.09 % Na 16.30 % Na2 O
Aluminum 14.19 % Al 26.82 % Al2 O3
Silicon 22.16 % Si 47.41 % SiO2
Hydrogen 1.06 % H 9.48 % H2 O
Oxygen 50.49 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
Na2 Al2 Si3 O10 •2(H2 O)
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:
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 - Scalenohedral H-M Symbol (4 2m) Space Group: I 4 2d
X Ray Diffraction:
By Intensity(I/Io ): 2.867(1), 4.387(0.5), 6.549(0.5),
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:
PETetranatrolite = 1.48 barns/electronU=PETetranatrolite x r Electron 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 4 2d 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 21 21 2 2 2 2
77.01.05.07 Gonnardite Na2CaAl4Si6O20•7(H2O) I 4 2d 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 21 21 21 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 4 2d 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 4 2d 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
Search for Tetranatrolite using:
[AOL ]
[Bing ]
[Dog Pile ]
[GeoScienceWorld ]
[HotBot ]
[Ixquick ]
[Lycos ]
[MAMMA ]
[Scirus ]
[Teoma ]
[WebCrawler ]
[Wikipedia ]
[YAHOO ]
Visit our Advertisers for Tetranatrolite :
Ask about Tetranatrolite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in
Espa�ol
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:
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.