Cryolithionite Mineral Data (original) (raw)

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 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 - HexoctahedralH-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:

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| | Forms:( 2 1 1) Warning: this large pop-up is very compute intensive and may not work well with some computers. | | ------------------------------------------------------------------------------------------------------------------------- |

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| | Geller S , American Mineralogist , 56 (1971) p.18-23, Refinement of the crystal structure of cryolithionite, {Na3}[Al2](Li3)F12 | | ------------------------------------------------------------------------------------------------------------------------------------ |

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:

11.06.04.01 (11)Halide Complexes; Alumino-fluorides

(11.06)with miscellaneous formulae

(11.06.04)Dana Group

11.06.04.01 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
14 - WWW-MINCRYST

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Ask about Cryolithionite here :
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Print or Cut-and-Paste your Cryolithionite Specimen Label here :

Cryolithionite

Na3Li3Al2F12
Dana No: 11.06.04.01 Strunz No: 03.CB.05
Locality:

Notes: