Paranatrolite Mineral Data

General Paranatrolite Information

Chemical Formula:

Na2[Al2Si3O10]•3(H2O)

Composition:

Molecular Weight = 415.43 gm

Potassium 2.07 % K 2.49 % K₂O

Sodium 10.24 % Na 13.80 % Na₂O

Calcium 0.58 % Ca 0.81 % CaO

Aluminum 16.50 % Al 31.17 % Al₂O₃

Silicon 18.66 % Si 39.92 % SiO₂

Hydrogen 1.50 % H 13.44 % H₂O

Oxygen 50.45 % O

______ ______

100.00 % 101.64 % = TOTAL OXIDE

Empirical Formula:

Na_1.85K_0.22Ca_0.06Al_2.54Si_2.76O₁₀•3.1(H₂O)

Environment:

Unstable mineral epitaxial on natrolite. Dehydrates to tetranatrolite.

IMA Status:

IMA Status in Question 1998

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:

Paranatrolite + Pronunciation

Synonym:

ICSD 63218

IMA1978-017

PDF 42-1386

Paranatrolite Image

Images:

Paranatrolite

Comments: Translucent prismatic paranatrolite crystal aggregate.
Location: Mont Saint Hilaire, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Paranatrolite Crystallography

Axial Ratios:

a:b:c =0.3434:1:0.5183

Cell Dimensions:

a = 6.5952, b = 19.204, c = 9.955, Z = 4; beta = 107.737° V = 1,200.91 Den(Calc)= 2.30

Crystal System:

Monoclinic - DomaticH-M Symbol (m) Space Group: Cc

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

By Intensity(I/I_o): 2.94(1), 5.92(0.6), 4.44(0.4),

Crystal Structure:

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Lee Y , Hriljac J A , Parise J B , Vogt T , American Mineralogist , 90 (2005) p.252-257, Pressure-induced stabilization of ordered paranatrolite: A new, insight into the paranatrolite controversy, Sample: at P = 0.99 GPa

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

Physical Properties of Paranatrolite

Cleavage:

None

Color:

Colorless, White, Pink.

Density:

2.21

Diaphaneity:

Transparent

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Habit:

Epitaxial - Crystallographic alignment with a precursor mineral

Hardness:

5-5.5 - Apatite-Knife Blade

Luster:

Vitreous - Greasy

Streak:

white

Optical Properties of Paranatrolite

Optical Data:

NCalc= 1.52 - from Gladstone-Dale relationship (KC = 0.2261) where Ncalc=Dcalc*KC+1
NCalc= 1.5 - from Gladstone-Dale relationship (KC = 0.2261) where Ncalc=Dmeas*KC+1

Calculated Properties of Paranatrolite

Electron Density:

Bulk Density (Electron Density)=2.31 gm/cc
note: Specific Gravity of Paranatrolite =2.30 gm/cc.

Fermion Index:

Fermion Index = 0.0089686248
Boson Index = 0.9910313752

Photoelectric:

PE_{Paranatrolite}= 1.66 barns/electron
U=PE_{Paranatrolite} x r_electron= 3.82 barns/cc.

Radioactivity:

GRapi = 29.95 (Gamma Ray American Petroleum Institute Units)
Concentration of Paranatrolite per GRapi unit = 3.34 (%)

Estimated Radioactivity from Paranatrolite - barely detectable

Paranatrolite Classification

Dana Class:

77.01.05.03 (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 Paranatrolite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8, AmMin 90:522)

See Also:

Links to other databases for Paranatrolite :
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 (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info

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

Paranatrolite

Na2[Al2Si3O10]•3(H2O)
Dana No: 77.01.05.03 Strunz No: 09.GA.05
Locality:

Notes: