General Tetranatrolite Information
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Chemical Formula: |
Na2[Al2Si3O10]·2(H2O) |
Composition: |
Molecular Weight = 380.22 gm |
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Sodium 12.09 % Na 16.30 % Na2O |
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Aluminum 14.19 % Al 26.82 % Al2O3 |
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Silicon 22.16 % Si 47.41 % SiO2 |
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Hydrogen 1.06 % H 9.48 % H2O |
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Oxygen 50.49 % O |
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______ ______ |
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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 |
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. |
Synonym: |
Discredited |
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ICSD 39904 |
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PDF 33-1205 |
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Tetranatrolite Image |
Images:
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Tetranatrolite Crystallography
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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 |
X Ray Diffraction: |
By Intensity(I/Io): 2.867(1), 4.387(0.5), 6.549(0.5), |
Crystal Structure:
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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]
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Physical Properties of Tetranatrolite
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Cleavage: |
None |
Color: |
White, Pale pink. |
Density: |
2.28 |
Diaphaniety: |
Translucent to Opaque |
Hardness: |
5 - Apatite |
Luminescence: |
Fluorescent. |
Luster: |
Vitreous - Dull |
Streak: |
white |
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Optical Properties of Tetranatrolite
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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 |
Optical Data: |
Uniaxial (+), w=1.481, e=1.496, bire=0.0150. |
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Calculated Properties of Tetranatrolite
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Electron Density: |
relectron=2.25 gm/cc note: rTetranatrolite =2.25 gm/cc. |
Fermion Index |
Fermion Index = 0.01059 Boson Index = 0.98941 |
Photoelectric: |
PETetranatrolite = 1.48 barns/electron U=PETetranatrolite x relectron= 3.32 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Tetranatrolite is Not Radioactive |
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Tetranatrolite Classification
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Dana Class: |
77.1.5.2 (77)Tectosilicate Zeolite group |
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(77.1)true zeolites |
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(77.1.5)Natrolite and related species |
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77.1.5.1 Natrolite Na2[Al2Si3O10]·2(H2O) F dd2 mm2 |
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77.1.5.2 Tetranatrolite ? Na2[Al2Si3O10]·2(H2O) I 42d 4 2m |
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77.1.5.3 Paranatrolite Na2[Al2Si3O10]·3(H2O) Cc m |
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77.1.5.4 Mesolite Na2Ca2Al6Si9O30·8(H2O) C 2 2 |
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77.1.5.5 Scolecite CaAl2Si3O10·3(H2O) Cc m |
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77.1.5.6 Edingtonite BaAl2Si3O10·4(H2O) P 21212 2 2 2 |
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77.1.5.7 Gonnardite Na2CaAl4Si6O20·7(H2O) I 42d 4 2m |
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77.1.5.8 Cowlesite CaAl2Si3O10·5-6(H2O) P 2221, P mmm, Pmm2 Ortho |
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77.1.5.9 Thomsonite-Ca NaCa2Al5Si5O20·6(H2O) Pncn 2/m 2/m 2/m |
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77.1.5.10 Thomsonite-Sr! (Sr,Ca)2Na[Al5Si5O20]·7(H2O) Pcnn 2/m 2/m 2/m |
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77.1.5.11 Nabesite! Na2BeSi4O10·4(H2O) P 212121 2 2 2 |
Strunz Class: |
VIII/J.21-30 VIII - Silicates |
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VIII/J - Tectosilicates (network), with zeolite-structure, Bladed Zeolites |
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VIII/J.21 - Zeolite group, Natrolite - Thomsonite series |
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VIII/J.21-10 Natrolite Na2[Al2Si3O10]·2(H2O) F dd2 mm2 |
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VIII/J.21-20 Paranatrolite Na2[Al2Si3O10]·3(H2O) Cc m |
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VIII/J.21-30 Tetranatrolite Na2[Al2Si3O10]·2(H2O) I 42d 4 2m |
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VIII/J.21-40 Gonnardite Na2CaAl4Si6O20·7(H2O) I 42d 4 2m |
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VIII/J.21-50 Mesolite Na2Ca2Al6Si9O30·8(H2O) C 2 2 |
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VIII/J.21-60 Scolecite CaAl2Si3O10·3(H2O) Cc m |
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VIII/J.21-70 Thomsonite-Ca NaCa2Al5Si5O20·6(H2O) Pncn 2/m 2/m 2/m |
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VIII/J.21-80 Thomsonite-Sr! (Sr,Ca)2Na[Al5Si5O20]·7(H2O) Pcnn 2/m 2/m 2/m |
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Other Tetranatrolite Information
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References: |
NAME( Dana8) PHYS. PROP.(Dana8) 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 - Crocoite.com Mineral Locations
6 - EUROmin Project
7 -Google Images
8 -Google Scholar
9 -Handbook of Mineralogy (MinSocAm)
10 -Handbook of Mineralogy (UofA)
11 -MinDAT
12 -MinMax(Deutsch)
13 -MinMax(English)
14 -Mineralienatlas (Deutsch)
15 -QUT Mineral Atlas
16 - WWW-MINCRYST
17 -École des Mines de Paris
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Print or Cut-and-Paste your Tetranatrolite Specimen Label here :
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Tetranatrolite
Na2[Al2Si3O10]·2(H2O)
Dana No: 77.1.5.2 Strunz No: VIII/J.21-30
Locality:
Notes:
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