Silinaite Mineral Data + Say SILINAITE


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General Silinaite Information

Help on Chemical  Formula: Chemical Formula: NaLiSi2O5·2(H2O)
Help on Composition: 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
Help on Empirical Formula: Empirical Formula: NaLiSi2O5·2(H2O)
Help on IMA Status: IMA Status: Approved IMA 1991
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Synonym: Synonym: ICSD 63718
  IMA1990-028
  PDF 44-1410
 

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Silinaite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6072:1:1.7258
Help on Cell Dimensions: Cell Dimensions: a = 5.061, b = 8.334, c = 14.383, Z = 4; beta = 96.6° V = 602.63 Den(Calc)= 2.23
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: A2/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.847(1), 4.14(1), 7.14(1),
Click Here for Large Silinaite Structure Window Crystal Structure:

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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

Help on Cleavage: Cleavage: [001] Perfect, [010] Good, [110] Good
Help on Color: Color: Colorless, White.
Help on Density: Density: 2.24
Help on Diaphaniety: Diaphaniety: Translucent to Opaque
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luster: Luster: Vitreous - Dull
Help on Streak: Streak: white
 

Optical Properties of Silinaite

Help on Gladstone-Dale: 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
Help on Optical Data: 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

Help on Electron Density: Electron Density:

relectron=2.25 gm/cc
note: rSilinaite =2.23 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.01582
Boson Index = 0.98418
Help on Photoelectric: Photoelectric:

PESilinaite = 1.31 barns/electron
U=PESilinaite x relectron= 2.96 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Silinaite is Not Radioactive

 

Silinaite Classification

Help on  Dana Class: Dana Class: 74.3.5.3 (74)Phyllosilicate Modulated Layers
  (74.3)with joined strips
  (74.3.5)Na phyllosilicates
 
74.3.5.1 Natrosilite Na2Si2O5 P 21/a 2/m
 
74.3.5.2 Makatite Na2Si4O8(OH)2·4(H2O) P 21/c 2/m
 
74.3.5.3 Silinaite NaLiSi2O5·2(H2O) A2/n 2/m
 
74.3.5.4 Searlesite NaBSi2O5(OH)2 P 21 2
Help on  Strunz Class: Strunz Class: VIII/G.05-05 VIII - Silicates
  VIII/G - Intermediate between chain- and layered silicates
  VIII/G.05 - Silinaite - Makatite series
 
VIII/G.05-05 Silinaite NaLiSi2O5·2(H2O) A2/n 2/m
 
VIII/G.05-10 Searlesite NaBSi2O5(OH)2 P 21 2
 
VIII/G.05-20 Makatite Na2Si4O8(OH)2·4(H2O) P 21/c 2/m
 

Other Silinaite Information

Help on References: References: PHYS. PROP.(Am.Min.,Vol.76,p2023,1991) OPTIC PROP.(Am.Min.,Vol.76,p2023,1991)
Help on See Also: 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 -Google Images 7 -Google Scholar 8 -Handbook of Mineralogy (MinSocAm) 9 -Handbook of Mineralogy (UofA) 10 -MinDAT 11 -MinMax(Deutsch) 12 -MinMax(English) 13 -Mineralienatlas (Deutsch) 14 -QUT Mineral Atlas 15 - WWW-MINCRYST 16 -École des Mines de Paris

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

Silinaite

NaLiSi2O5·2(H2O)
Dana No: 74.3.5.3 Strunz No: VIII/G.05-05
Locality:

 

Notes:

 

 
   
 
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