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Cryolithionite

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Formula:
Na
 
3
Li
 
3
[AlF
 
6
]
 
2
System:IsometricColour:Colourless, white
Lustre:VitreousHardness:2½ - 3
Name:In allusion to its resemblance to CRYOLite and the LITHIum content.
This page provides mineralogical data about Cryolithionite.

Classification of Cryolithionite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:3/B.03-10
Nickel-Strunz 10th (pending) edition ID:3.CB.05

3 : HALIDES
C : Complex halides
B : Neso-aluminofluorides
Dana 8th edition ID:11.6.4.1

11 : HALIDE COMPLEXES
6 : Aluminofluorides - Isolated Octahedra
Hey's CIM Ref.:8.6.4

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

Type Locality:Ivigtut Cryolite deposit, Ivittuut (Ivigtut), Arsuk Fjord, Sermersooq, Greenland
Year of Discovery:1904
Associated Minerals at type locality:
Cryolite

Physical Properties of Cryolithionite

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

Crystallography of Cryolithionite

Crystal System:Isometric
Class (H-M):m3m (4/m 3 2/m) - Hexoctahedral
Space Group:Ia3d
Cell Parameters:a = 12.12Å
Unit Cell Volume:V 1,780.36 ų (Calculated from Unit Cell)
Morphology:Crystals dodecahedral, modified by {112} (Urals). Artificial crystals cubic. Crystals to 17cm. (Ivigtut).
Crystal Atlas:
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Cryolithionite no.2 - Goldschmidt (1913-1926)
Cryolithionite no.3 - Goldschmidt (1913-1926)

About Crystal Atlas

The mindat.org Crystal Atlas allows you to view a selection of crystal drawings of real and idealised crystal forms for this mineral and, in certain cases, 3d rotating crystal objects. The 3d models and HTML5 code are kindly provided by www.smorf.nl.

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Optical Data of Cryolithionite

Type:Isotropic

Chemical Properties of Cryolithionite

Formula:
Na
 
3
Li
 
3
[AlF
 
6
]
 
2
Simplified for copy/paste:Na3Li3[AlF6]2
Essential elements:Al, F, Li, Na
All elements listed in formula:Al, F, Li, Na

Relationship of Cryolithionite to other Species

Chemically related to group(s):
Garnet Structural Group
X
 
3
Z
 
2
(TO
 
4
)
 
3
Related Minerals - Nickel-Strunz Grouping):

- +
3.CB.15Cryolite
Na
 
3
[AlF
 
6
]
3.CB.15Elpasolite
NaK
 
2
[AlF
 
6
]
3.CB.15Simmonsite
Na
 
2
Li[AlF
 
6
]
3.CB.20Colquiriite
CaLi[AlF
 
6
]
3.CB.25Weberite
Na
 
2
Mg[AlF
 
6
]F
3.CB.30Karasugite
SrCa[Al(F,OH)
 
7
]
3.CB.35Usovite
Ba
 
2
CaMgAl
 
2
F
 
14
3.CB.40Pachnolite
NaCa[AlF
 
6
] · H
 
2
O
3.CB.40Thomsenolite
NaCa[AlF
 
6
] · H
 
2
O
3.CB.45Carlhintzeite
Ca
 
2
[AlF
 
6
]F · H
 
2
O
3.CB.50Yaroslavite
Ca
 
3
Al
 
2
F
 
10
(OH)
 
2
· H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
8.6.1Zharchikhite
AlF(OH)
 
2
8.6.2Chloraluminite
AlCl
 
3
· 6H
 
2
O
8.6.3Cadwaladerite
AlCl(OH)
 
2
· 4H
 
2
O
8.6.5Cryolite
Na
 
3
[AlF
 
6
]
8.6.6Chiolite
Na
 
5
Al
 
3
F
 
14
8.6.7Elpasolite
NaK
 
2
[AlF
 
6
]
8.6.8Weberite
Na
 
2
Mg[AlF
 
6
]F
8.6.9Ralstonite
NaMg[Al(F,OH)
 
6
] · H
 
2
O
8.6.10Koenenite
Na
 
4
Mg
 
9
Al
 
4
Cl
 
12
(OH)
 
22
8.6.11 Chlor-manasseite
Mg
 
x
Al(OH)
 
2x+2
Cl · (x-0.8)H
 
2
O x about 1.75
8.6.12Gearksutite
Ca[Al(F,OH)
 
5
(H
 
2
O)]
8.6.13Prosopite
CaAl
 
2
(F,OH)
 
8
8.6.14Yaroslavite
Ca
 
3
Al
 
2
F
 
10
(OH)
 
2
· H
 
2
O
8.6.15Carlhintzeite
Ca
 
2
[AlF
 
6
]F · H
 
2
O
8.6.16Colquiriite
CaLi[AlF
 
6
]
8.6.17Thomsenolite
NaCa[AlF
 
6
] · H
 
2
O
8.6.18Pachnolite
NaCa[AlF
 
6
] · H
 
2
O
8.6.19Zirklerite
(Fe,Mg,Ca)
 
9
Al
 
4
Cl
 
18
(OH)
 
12
· 14H
 
2
O (?)

Other Names for Cryolithionite

Synonyms:
Kryolithionite
Other Languages:
German:Kryolthionit
Russian:Криолитионит

Other Information

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

References for Cryolithionite

Reference List:

- +
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.

American Mineralogist (1971): 56: 18-23.

Internet Links for Cryolithionite

Search Engines:
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  • External Links:
  • Look for Cryolithionite on Webmineral
  • Look for Cryolithionite on Athena Mineralogy
  • Look for Cryolithionite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Mineral Dealers:
  • Wilensky Fine Minerals
  • Cryolithionite specimens for sale - minfind.com
  • Buy RARE Minerals from Rocks of Africa
  • Search for Cryolithionite on Well-Arranged Molecules
  • The Arkenstone - Fine Minerals
  • Buy fine minerals and gemstones from Pala International
  • Buy from McDougall Minerals
  • SpiriferMinerals.com - high quality low prices
  • Lapis Mineral Magazin
  • Find Cryolithionite on www.crystalclassics.co.uk
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • rare and unusual minerals mainly crystallized
  • Localities for Cryolithionite

    The 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.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    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 K Secher (1993) The Minerals of Greenland. Mineralogical Record 24:36
    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.
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