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Chiolite

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Formula:
Na
 
5
Al
 
3
F
 
14
System:TetragonalColour:Nearly colourless, ...
Hardness:3½ - 4
Name:From the Greek χιώυ, snow, and λίθος, stone, in allusion to its appearance and similarity to cryolite (ice-stone).
This page provides mineralogical data about Chiolite.

Classification of Chiolite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:3/C.03-20
Nickel-Strunz 10th (pending) edition ID:3.CE.05

3 : HALIDES
C : Complex halides
E : Phyllo-aluminofluorides
Dana 8th edition ID:11.6.11.1

11 : HALIDE COMPLEXES
6 : Aluminofluorides - Isolated Octahedra
Hey's CIM Ref.:8.6.6

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

Type Locality:Pit No. 69 (G.I. Gasberg's Topaz-Cryolite Pit), Ilmen Natural Reserve, Ilmen Mts, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia
Year of Discovery:1846
Geological Setting of type material:Cryolite-bearing pegmatite.
Associated Minerals at type locality:
TopazThomsenolitePhenakiteFluoriteCryolithionite

Physical Properties of Chiolite

Lustre:Vitreous, Pearly
Diaphaneity (Transparency):Transparent, Translucent
Colour:Nearly colourless, snow-white
Hardness (Mohs):3½ - 4
Cleavage:Perfect
On {001}; on {011} distinct.
Density (measured):2.998 g/cm3
Density (calculated):2.989 g/cm3

Crystallography of Chiolite

Crystal System:Tetragonal
Class (H-M):4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:P4/mnc {P4/m 21/n 2/c}
Cell Parameters:a = 7.01Å, c = 10.4Å
Ratio:a:c = 1 : 1.484
Unit Cell Volume:V 511.06 ų (Calculated from Unit Cell)
Morphology:Crystals dipyramidal {011}. Distinct crystals small and rare. Massive, granular.
Twinning:On {011}, distorted into prismatic shapes at times.
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Horizontal Axis: ° to ° Vertical Axis: % Source Data: Filtered Data:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Optical Data of Chiolite

Type:Uniaxial (-)
RI values: nω = 1.349 nε = 1.342
Maximum Birefringence:δ = 0.007

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate

Chemical Properties of Chiolite

Formula:
Na
 
5
Al
 
3
F
 
14
Simplified for copy/paste:Na5Al3F14
Essential elements:Al, F, Na
All elements listed in formula:Al, F, Na

Relationship of Chiolite to other Species

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
8.6.4Cryolithionite
Na
 
3
Li
 
3
[AlF
 
6
]
 
2
8.6.5Cryolite
Na
 
3
[AlF
 
6
]
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 Chiolite

Synonyms:
ArksuditeArksutiteChodneffiteChodnewiteNipholith
Other Languages:
German:Arksudit
Arksutit
Chiolit
Chiolith
Russian:Хиолит
Spanish:Arksudita
Arksutita
Chiolita

Other Information

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 Chiolite

Reference List:

- +
von Wörth and Chodnev (1845-46) Verh. min. Ges.: 208 (as Chiolith).

Hermann and Auerbach (1846) Journal für praktische Chemie, Leipzig: 37: 188 (as Chiolith).

Rammelsberg (1848) Annalen der Physik, Halle, Leipzig: 74: 314.

Dana, J.D. (1850) System of Mineralogy, 3rd. Edition, New York: 234 (as Chodneffite).

Koksharov, N. von (1862) Materialien zur Mineralogie Russlands. 11 volumes with atlas: vol. 4: 389.

Naumann, C.F. (1864) Elemente der Mineralogie. Leipzig. 5th. edition: 219 (as Nipholith).

Hagemann (1866) American Journal of Science: 42: 94 (as Arksutite).

Dana, J.D. (1868) System of Mineralogy, 5th. Edition, New York. (aided by G.J. Brush): 128.

Groth (1883) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 7: 478.

Nordenshiöld, A. E. (1886) Mineralogiska bidrag. 10. Arksutit från Ivigtut i Grönland. Geologiska Föreningens i Stockholm Förhandlinger 8: 172-175

Bøggild (1912) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 51: 598.

Goldschmidt, V. (1913) Atlas der Krystallformen. 9 volumes, atlas, and text: vol. 2: 138.

Clausen (1936) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 95: 394.

Brosset (1938) Zeitschrift für anorganische und allgemeine Chemie, Hamburg, Leipzig: 238: 201.

Caglioti and Giacomello (1938) Naturwissenschaften: 26: 317.

Brosset (1943) Chemical Abstracts, Easton, PA: 37: 13.

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: 123-124.

Journal of Solid State Chemistry: 36: 297-304.

Internet Links for Chiolite

Search Engines:
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  • External Links:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Chiolite details from Handbook of Mineralogy (PDF)
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  • Localities for Chiolite

    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
     
    • Kitaa Province (West Greenland)
      • Arsuk
        • Arsuk Firth
          • Ivittuut (Ivigtut)
    Nordenshiöld, A. E. (1886): Mineralogiska bidrag. 10. Arksutit från Ivigtut i Grönland. Geologiska Föreningens i Stockholm Förhandlinger 8: 172-175; 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: 112, 124; Petersen and Secher (1993) "The Minerals of Greenland". Mineralogical Record: 24(1).; Petersen, O. V and K Secher (1993) The Minerals of Greenland. Mineralogical Record 24:36
    Russia
     
    • Eastern-Siberian Region
      • Transbaikalia (Zabaykalye)
        • Chitinskaya Oblast'
    Victor V. Sharygin analytycal data (2012)
    • Urals Region
      • Southern Urals
        • Chelyabinsk Oblast'
          • Ilmen Mts
            • Ilmen Natural Reserve
    Polyakov, V.O. (1985): Alumofluorites of the Il’meny Mountains. In: Minerals from Deposits of the Central and Southern Urals (Sverdlovsk), 3-11.; 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.
    Ukraine
     
    • Zhytomyr Oblast' (Zhitomir Oblast')
    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
     
    • Virginia
      • Amelia Co.
        • Winterham
    [L.E. Kearns, 1995 - Mineralogical Record Vol 26 No.6 - "Alumino-Fluorides from the Morefield Pegmatite"]
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