Mineralogy Database

Cryolithionite Mineral Data

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General Cryolithionite Information

Help on Chemical  Formula: Chemical Formula: Na3Li3Al2F12
Help on Composition: Composition: Molecular Weight = 371.74 gm
   Sodium    18.55 %  Na   25.01 % Na2O
   Lithium    5.60 %  Li   12.06 % Li2O
   Aluminum  14.52 %  Al   27.43 % Al2O3
   Fluorine  61.33 %  F    61.33 % F
               -   %   F   -25.82 % -O=F2    
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na3Li3Al2F12
Help on Environment: Environment: Granite pegmatites.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1904
Help on Locality: Locality: Ivigtut and Arksukfiord, West Greenland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its similarity to CRYOlite and high LITHIum content.
Help on Synonym: Synonym: ICSD 9923
  PDF 22-416

Cryolithionite Image

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  Cryolithionite   Cryolite

Comments: White translucent crystalline cryolithionite in brown cryolite.
Location: Ivigtut, Greenland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Cryolithionite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 12.125, Z = 8; V = 1,782.56 Den(Calc)= 2.77
Help on Crystal System: Crystal System: Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: I a3d
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.96(1), 2.21(0.8), 4.29(0.8),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 2 1 1)

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Physical Properties of Cryolithionite

Help on Cleavage: Cleavage: {???} Good, {???} Good, {???} Good
Help on Color: Color: Colorless, White.
Help on Density: Density: 2.78
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Crystalline - Coarse - Occurs as well-formed coarse sized crystals.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Vitreous - Greasy
Help on Streak: Streak: white

Optical Properties of Cryolithionite

Help on Optical Data: Optical Data: Isotropic, n=1.34.

Calculated Properties of Cryolithionite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.62 gm/cc
note: Specific Gravity of Cryolithionite =2.77 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0042011644
Boson Index = 0.9957988356
Help on Photoelectric: Photoelectric: PECryolithionite = 1.06 barns/electron
U=PECryolithionite x rElectron Density= 2.78 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cryolithionite is Not Radioactive

Cryolithionite Classification

Help on  Dana Class: Dana Class: (11)Halide Complexes; Alumino-fluorides
  (11.06)with miscellaneous formulae
  (11.06.04)Dana Group Cryolithionite Na3Li3Al2F12 I a3d 4/m 3 2/m
Help on  Strunz Class: Strunz Class: 03.CB.05 03 - HALIDES
  03.C - Complex Halides
  03.CB -Neso-aluminofluorides
03.CB.05 Cryolithionite Na3Li3Al2F12 I a3d 4/m 3 2/m

Other Cryolithionite Information

Help on References: References: NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Cryolithionite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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Dana No: Strunz No: 03.CB.05





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