Silinaite Mineral Data

Advertisment

General Silinaite Information

Chemical Formula:

NaLiSi2O5•2(H2O)

Composition:

Molecular Weight = 202.13 gm

Sodium 11.37 % Na 15.33 % Na₂O

Lithium 3.43 % Li 7.39 % Li₂O

Silicon 27.79 % Si 59.45 % SiO₂

Hydrogen 1.99 % H 17.83 % H₂O

Oxygen 55.41 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaLiSi₂O₅•2(H₂O)

Environment:

In sodalite syenite xenoliths in nepheline syenite in an intrusive alkalic gabbro-syenite complex.

IMA Status:

Approved IMA 1991

Locality:

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

Name Origin:

For SIlicon, LIthium, and sodium, NAtrium, in the composition.

Name Pronunciation:

Silinaite + Pronunciation

Synonym:

ICSD 63718

IMA1990-028

PDF 44-1410

Search for Silinaite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Silinaite Crystallography

Axial Ratios:

a:b:c =0.6072:1:1.7258

Cell Dimensions:

a = 5.061, b = 8.334, c = 14.383, Z = 4; beta = 96.6° V = 602.63 Den(Calc)= 2.23

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: A2/n

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

By Intensity(I/I_o): 2.847(1), 4.14(1), 7.14(1),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Grice J D , The Canadian Mineralogist , 29 (1991) p.363-367, The crystal structure of silinaite, NaLiSi2O6.2H20: a monophyllosilicate, Locality: Mont Saint-Hilaire, Rouville County, Quebec, Canada

Physical Properties of Silinaite

Cleavage:

{001} Perfect, {010} Good, {110} Good

Color:

Colorless, White.

Density:

2.24

Diaphaneity:

Translucent to Opaque

Hardness:

4.5 - Between Fluorite and Apatite

Luster:

Vitreous - Dull

Streak:

white

Optical Properties of Silinaite

Gladstone-Dale:

CI meas= 0.024 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.019 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2315,KPDmeas= 0.2305,KC= 0.2361
Ncalc = 1.53

Optical Data:

Biaxial (+), a=1.515, b=1.516, g=1.518, bire=0.0030, 2V(Calc)=72, 2V(Meas)=64-71.

Calculated Properties of Silinaite

Electron Density:

Bulk Density (Electron Density)=2.25 gm/cc
note: Specific Gravity of Silinaite =2.23 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Silinaite= 1.31 barns/electron
U=PE_Silinaite x rElectron Density= 2.96 barns/cc.

Radioactivity:

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

Silinaite Classification

Dana Class:

74.03.05.03 (74)Phyllosilicate Modulated Layers

(74.03)with joined strips

(74.03.05)Na phyllosilicates

74.03.05.01 Natrosilite Na2Si2O5 P 2₁/a 2/m

74.03.05.02 Makatite Na2Si4O8(OH)2•4(H2O) P 2₁/c 2/m

74.03.05.03 Silinaite NaLiSi2O5•2(H2O) A2/n 2/m

74.03.05.04 Searlesite NaBSi2O5(OH)2 P 2₁ 2

Strunz Class:

09.EF.20 09 - SILICATES (Germanates)

09.E - Phyllosilicates

09.EF -Single nets with 6-membered rings, ± other rings

09.EF.20 Silinaite NaLiSi2O5•2(H2O) A2/n 2/m

Other Silinaite Information

References:

NAME( AntBidBlaNic2) PHYS. PROP.(Am.Min.,Vol.76,p2023,1991) OPTIC PROP.(Am.Min.,Vol.76,p2023,1991)

See Also:

Links to other databases for Silinaite :
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
17 - WWW-MINCRYST

Search for Silinaite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Silinaite :

Dakota Matrix Minerals Google Search for Silinaite
John Betts Fine Minerals Search for Silinaite
McDougall Minerals Google Search for Silinaite
Rock and Mineral Shows Google Search for Silinaite
Weinrich Minerals, Inc. Google Search for Silinaite

Ask about Silinaite 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 Español

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

Silinaite

NaLiSi2O5•2(H2O)
Dana No: 74.03.05.03 Strunz No: 09.EF.20
Locality:

Notes: