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Cryolithionite

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About CryolithioniteHide

Formula:
Na3Li3[AlF6]2
Colour:
Colourless, white
Lustre:
Vitreous
Hardness:
2½ - 3
Specific Gravity:
2.77
Crystal System:
Isometric
Name:
In allusion to its resemblance to CRYOLite and the LITHIum content.
Ungrouped member of the Garnet Supergroup.


Classification of CryolithioniteHide

Approved, 'Grandfathered' (first described prior to 1959)
3.CB.05

3 : HALIDES
C : Complex halides
B : Neso-aluminofluorides
11.6.4.1

11 : HALIDE COMPLEXES
6 : Aluminofluorides - Isolated Octahedra
8.6.4

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
6 : Halides of Al

Physical Properties of CryolithioniteHide

Vitreous
Transparency:
Transparent
Colour:
Colourless, white
Hardness:
2½ - 3 on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
On {011}.
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
2.77 g/cm3 (Measured)    2.772 g/cm3 (Calculated)

Optical Data of CryolithioniteHide

Type:
Isotropic

Chemical Properties of CryolithioniteHide

Formula:
Na3Li3[AlF6]2
IMA Formula:
Na3Al2(LiF4)3

Crystallography of CryolithioniteHide

Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Ia3d
Cell Parameters:
a = 12.12 Å
Unit Cell V:
1,780.36 ų (Calculated from Unit Cell)
Morphology:
Crystals dodecahedral, modified by {112} (Urals). Artificial crystals cubic. Crystals to 17 cm (Ivigtut).

Crystallographic forms of CryolithioniteHide

Crystal Atlas:
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Cryolithionite no.2 - Goldschmidt (1913-1926)
Cryolithionite no.3 - Goldschmidt (1913-1926)
3d models and HTML5 code kindly provided by www.smorf.nl.

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Type Occurrence of CryolithioniteHide

Synonyms of CryolithioniteHide

Other Language Names for CryolithioniteHide

Relationship of Cryolithionite to other SpeciesHide

Other Members of this group:
Berzeliite Group
Bitikleite Group
BlythiteMn2+3Mn3+2[SiO4]3
Garnet GroupX3Z2(SiO4)3
Henritermierite Group
KatoiteCa3Al2(SiO4)3-x(OH)4x (x = 1.5-3)Iso.
KhohariteMg3Fe3+2(SiO4)3
Schorlomite Group
SkiagiteFe2+3Fe3+2[SiO4]3
UM1984-37-SiO:CrMnMn2+3(Cr3+,Mn3+)2Si3O12
YafsoaniteCa3Zn3(TeO6)2Iso. m3 (2/m 3)

Common AssociatesHide

Associated Minerals Based on Photo Data:
Cryolite13 photos of Cryolithionite associated with Cryolite on mindat.org.
Siderite6 photos of Cryolithionite associated with Siderite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

3.CB.15CryoliteNa2NaAlF6Mon. 2/m
3.CB.15ElpasoliteK2NaAlF6Iso. m3 (2/m 3) : Pa3
3.CB.15SimmonsiteNa2LiAlF6Mon.
3.CB.20ColquiriiteCaLi[AlF6]Trig.
3.CB.25WeberiteNa2Mg[AlF6]FOrth. mmm (2/m 2/m 2/m) : Immm
3.CB.30KarasugiteSrCa[Al(F,OH)7]Mon.
3.CB.35UsoviteBa2CaMgAl2F14Mon.
3.CB.40PachnoliteNaCa[AlF6] · H2OMon. 2/m
3.CB.40ThomsenoliteNaCa[AlF6] · H2OMon. 2/m : P21/b
3.CB.45CarlhintzeiteCa2[AlF6]F · H2OTric.
3.CB.50YaroslaviteCa3Al2F10(OH)2 · H2OOrth.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

8.6.1ZharchikhiteAlF(OH)2Mon.
8.6.2ChloraluminiteAlCl3 · 6H2OTrig.
8.6.3CadwaladeriteAlCl(OH)2 · 4H2OAmor.
8.6.5CryoliteNa2NaAlF6Mon. 2/m
8.6.6ChioliteNa5Al3F14Tet. 4/mmm (4/m 2/m 2/m) : P4/mnc
8.6.7ElpasoliteK2NaAlF6Iso. m3 (2/m 3) : Pa3
8.6.8WeberiteNa2Mg[AlF6]FOrth. mmm (2/m 2/m 2/m) : Immm
8.6.9Hydrokenoralstonite Na0.5(Al,Mg)2(F,OH)6•H2O Iso. m3m (4/m 3 2/m) : Fd3m
8.6.10KoeneniteNa4Mg9Al4Cl12(OH)22Trig. 3m (3 2/m) : R3m
8.6.11 Chlor-manasseiteMgxAl(OH)2x+2Cl · (x-0.8)H2O
x about 1.75
8.6.12GearksutiteCa[Al(F,OH)5(H2O)]Tric. 1 : P1
8.6.13ProsopiteCaAl2F4[(OH)4-xFx], x = 0.0–1.0Mon. 2/m : B2/b
8.6.14YaroslaviteCa3Al2F10(OH)2 · H2OOrth.
8.6.15CarlhintzeiteCa2[AlF6]F · H2OTric.
8.6.16ColquiriiteCaLi[AlF6]Trig.
8.6.17ThomsenoliteNaCa[AlF6] · H2OMon. 2/m : P21/b
8.6.18PachnoliteNaCa[AlF6] · H2OMon. 2/m
8.6.19Zirklerite(Fe,Mg,Ca)9Al4Cl18(OH)12 · 14H2O (?)Trig.

Other InformationHide

Thermal Behaviour:
Melting point 710°C.
Notes:
Slightly soluble in water. Soluble in sulfuric acid, with generation of HF.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for CryolithioniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Ussing (1904) Kongelige Danske Videnskabernes Selskab, Copenhagen, Overs.: 1.
Bøggild (1913) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 51: 600.
Menzer (1930) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 75: 265.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 99-100.
Geller, S. (1971): Refinement of the crystal structure of cryolithionite, {Na3}[Al2](Li3)F12. American Mineralogist 56, 18-23.

Internet Links for CryolithioniteHide

Localities for CryolithioniteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Denmark (TL)
 
  • Greenland
    • Sermersooq
      • Arsuk Fjord
        • Ivittuut (Ivigtut)
Overs. K. D. (1904) Vid. Selsk. Forh.: 1: 3; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 99, 112.; Petersen, O.V. and Secher, K. (1993): The minerals of Greenland. Mineralogical Record 24 (2): 1-65 (p.36)
Mexico
 
  • San Luis Potosí
    • Mun. de Rioverde
Planer-Friedrich, B. (2000). Hydrogeological and hydrochemical investigations in the Rio Verde Basin, Mexico. Freiberg Online Geoscience, 3, 1-145.
Russia
 
  • Urals Region
    • Southern Urals
      • Bashkortostan Republic (Bashkiria Republic)
        • Beloretsk district
          • Ishlya
Крупенин М.Т., Прохаска В., Ронкин Ю.Л. Природа фтора и рудообразующих растворов флюоритового месторождения Суран (Башкирский мегантиклинорий) по данным изучения лантаноидов, флюидных включений и Sr-Nd систематики // Литосфера, 2012, № 5, стр. 126–144
      • Chelyabinsk Oblast'
        • Ilmen Mts
          • Ilmen Natural Reserve
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Bailey, J. C: Formation of cryolite and other aluminofluorides: A petrologic review. Bull. geol. Soc. Denmark, vol. 29, pp. 1-45. Copenhagen, June 10th, 1980.
USA
 
  • Nevada
    • Mineral Co.
      • Fitting District
        • Gillis Range
Mineralogical Record: 31: 204.
Mineral and/or Locality  
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