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Thomsenolite

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About ThomsenoliteHide

04950950014946702307928.png
Hans Peter Jørgen Julius Thomsen
Formula:
NaCa[AlF6] · H2O
Colour:
Colourless, white, pale lilac; brownish or reddish tinted due to staining; colourless in transmitted light.
Lustre:
Vitreous, Pearly
Hardness:
2
Specific Gravity:
2.981
Crystal System:
Monoclinic
Name:
Named after Hans Peter Jorgen Julius Thomsen (1826-1909), Professor of Chemistry, University of Copenhagen (Denmark), and founder of the Greenland cryolite industry.
Dimorph of:
This page provides mineralogical data about Thomsenolite.


Classification of ThomsenoliteHide

Approved, 'Grandfathered' (first described prior to 1959)
3.CB.40

3 : HALIDES
C : Complex halides
B : Neso-aluminofluorides
11.6.6.1

11 : HALIDE COMPLEXES
6 : Aluminofluorides - Isolated Octahedra
8.6.17

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

Physical Properties of ThomsenoliteHide

Vitreous, Pearly
Transparency:
Transparent, Translucent
Comment:
Pearly on cleavages
Colour:
Colourless, white, pale lilac; brownish or reddish tinted due to staining; colourless in transmitted light.
Streak:
White
Hardness:
Tenacity:
Brittle
Cleavage:
Perfect
On {001}; {110} distinct.
Fracture:
Irregular/Uneven
Density:
2.981 g/cm3 (Measured)    2.986(3) g/cm3 (Calculated)

Optical Data of ThomsenoliteHide

Type:
Biaxial (-)
RI values:
nα = 1.407 nβ = 1.414 nγ = 1.415
Max Birefringence:
δ = 0.008
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v

Chemical Properties of ThomsenoliteHide

Formula:
NaCa[AlF6] · H2O
IMA Formula:
NaCaAlF6 · H2O

Crystallography of ThomsenoliteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Cell Parameters:
a = 5.563(2) Å, b = 5.541(2) Å, c = 16.115(1) Å
β = 96.35(3)°
Ratio:
a:b:c = 1.004 : 1 : 2.908
Unit Cell V:
493.69 ų (Calculated from Unit Cell)
Morphology:
Crystals commonly prismatic [001]; cubic in aspect with equal development of {001} and {110}. Grouped in parallel aggregates. Also tabular {001}. {110} and terminal prisms strongly striated parallel to the intersection with {001}. {h0l} often curved. Opaline or chalcedony-like crusts and stalactitic masses.
Twinning:
None observed.

Crystallographic forms of ThomsenoliteHide

Crystal Atlas:
Image Loading
Click on an icon to view
Thomsenolite no.1 - Goldschmidt (1913-1926)
Thomsenolite no.7 - Goldschmidt (1913-1926)
3d models and HTML5 code kindly provided by www.smorf.nl.

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Edge Lines | Miller Indices | Axes

Transparency
Opaque | Translucent | Transparent

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Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation

Epitaxial Relationships of ThomsenoliteHide

Epitaxial Minerals:
PachnoliteNaCa[AlF6] · H2O
Epitaxy Comments:
Oriented growths of thomsenolite on pachnolite, with thomsenolite (001) and (110) quasi-parallel to pachnolite (110) and (001). Also with thomsenolite (110) and (110) quasi-parallel to pachnolite (110) and (001).

X-Ray Powder DiffractionHide

Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Geological EnvironmentHide

Geological Setting:
Granitic pegmatites

Type Occurrence of ThomsenoliteHide

Place of Conservation of Type Material:
University of Copenhagen
Associated Minerals at Type Locality:

Synonyms of ThomsenoliteHide

Other Language Names for ThomsenoliteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
45 photos of Thomsenolite associated with Hydrokenoralstonite Na0.5(Al,Mg)2(F,OH)6•H2O
32 photos of Thomsenolite associated with PachnoliteNaCa[AlF6] · H2O
23 photos of Thomsenolite associated with SideriteFeCO3
18 photos of Thomsenolite associated with QuartzSiO2
18 photos of Thomsenolite associated with CryoliteNa2NaAlF6
16 photos of Thomsenolite associated with ProsopiteCaAl2F4[(OH)4-xFx], x = 0.0–1.0
11 photos of Thomsenolite associated with Limonite(Fe,O,OH,H2O)
9 photos of Thomsenolite associated with Hagemannite
8 photos of Thomsenolite associated with SphaleriteZnS
6 photos of Thomsenolite associated with Gagarinite-(Y)NaCaYF6

Related Minerals - Nickel-Strunz GroupingHide

3.CB.05CryolithioniteNa3Li3[AlF6]2Iso. m3m (4/m 3 2/m) : Ia3d
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.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.
8.6.3CadwaladeriteAl5(H2O)3(OH)12·n(Cl,H2O)Amor.
8.6.4CryolithioniteNa3Li3[AlF6]2Iso. m3m (4/m 3 2/m) : Ia3d
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.
8.6.18PachnoliteNaCa[AlF6] · H2OMon. 2/m
8.6.19Zirklerite(Fe,Mg,Ca)9Al4Cl18(OH)12 · 14H2O (?)Trig.

Other InformationHide

Notes:
Readily soluble in H2SO4.
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 ThomsenoliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Hagemann, G. (1866), American Journal of Science: 42: 93 (as Dimetric Pachnolite).
Shepard (1866) American Journal of Science: 42: 246 (as Hagemannite).
Dana, J.D. (1868) System of Mineralogy, 5th. Edition, New York: 129.
Nordensiöld (1874) Geologiska Föeningens I Stockholm. Förhandlinger, Stockholm: 2: 81.
Koenig (1876) Proceedings of the Academy of Science of Philadelphia: 42.
Des Cloizeaux (1882) Bulletin de la Société française de Minéralogie: 5: 316.
Brandl in: Groth (1882) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 7: 470.
Dana, E.S. (1892) System of Mineralogy, 6th. Edition, New York: 180.
Groth (1906) Chem. Kryst.: 1: 461.
Bøggild (1913) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 51: 601.
Goldschmidt, V. (1922) Atlas der Krystallformen. 9 volumes, atlas, and text: vol. 8: 130.
Ferguson (1946) Transactions of the Royal Society of Canada, section 4: 40: 11.
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: 116-118.
Adhikesavalu, D., Cameron, T. S., Knop, O. (1985): Thomsenolite, NaCaAlF6·H2O: hydrogen bonding and comparison with pachnolite, Canadian Journal of Chemistry, 63, 3322-3327.
Mineralogical Record (1993): 24: 34.

Internet Links for ThomsenoliteHide

Localities for ThomsenoliteHide

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.
Canada
 
  • Québec
    • Montérégie
      • Lajemmerais RCM
        • Varennes & St-Amable
HORVÁTH, L., PFENNINGER HORVÁTH, E., GAULT, R.A., and TARASSOFF, P. (1998) Mineralogy of the Saint Amable sill, Varennes and Saint Amable, Québec, Canada. Mineralogical Record, 29, 83 118.
Horváth, L., Pfenninger-Horváth, E., Gault, R. A., & Tarassoff, P. (1998): Mineralogy of the Saint-Amable Sill, Varennes and Saint-Amable, Québec. Mineralogical Record, 29: 83-118.
Denmark (TL)
 
  • Greenland
    • Sermersooq
      • Arsuk Fjord
        • Ivittuut (Ivigtut)
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, 117; Acta Cryst. 23 (1967).; Petersen, O.V. and Secher, K. (1993): The minerals of Greenland. Mineralogical Record 24 (2): 1-65 (p.36)
Finland
 
  • Satakunta
    • Harjavalta
Marttila, E 1969. Satakunnan hiekkakiven sedimentaatio-olosuhteista. Lisensiaattitutkimus, Turun Yliopisto, Geologian laitos, 157 s.
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
Schnorrer-Köhler, G., Rewitzer, C., Standfuss, L. & Standfuss, K. (1988): Weitere Neufunde aus Lavrions antiken Schlacken. Lapis 13 (2), 11-14.
          • Thorikos area
Gelaude, Piet, van Kalmthout, Piet and Rewitzer, Christian (1996) Laurion: The Minerals in the Ancient Slags, Janssen Print, Nijmegen, The Netherlands
Iceland
 
  • Southern Region
    • Vestmannaeyjar
      • Vestmannaeyjar archipelago (Westman islands)
        • Heimaey island
Mitolo, D., Garavelli, A., Pedersen, L., Balić-Žunić, T., Jakobsson, S.P., Vurro, F. (2008): Mineralogy of actually forming sublimates at Eldfell Volcano, Heimaey (Vestmannaeyjar archipelago), Iceland. Plinius, 34, 322.
Japan
 
  • Shiga Prefecture
    • Otsu City
Kotora Jimboh (1899) Notes on the Minerals of Japan, p 234-235.
Kazakhstan
 
  • East Kazakhstan
    • Tarbagatai Range
      • Akzhaylyautas Mts (Akzhailyautas Mts; Akjaylautas Mts; Akzhalautas Mts)
Pavel M. Kartashov data; 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.
Nigeria
 
  • Plateau
Am Min 51:299-323
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.
Norway
 
  • Oppland
    • Lunner
Raade, G. & Haug, J. (1980): Rare Fluorides from a soda granite in the Oslo Region, Norway. Mineralogical Record, 11, 83-91
Russia
 
  • Buryatia
    • Mama River Basin
      • Maigunda River
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.
  • Chelyabinsk Oblast
    • Ilmen Mountains
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.
  • Tuva
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.
    • Kaa-Khemsky District
P.M. Kartashov data; USGS Open File Report 2005-1252 p175
  • Zabaykalsky Krai
    • Chitinskaya Oblast
P.M. Karashov data; E. V. Sklyarov, D. P. Gladkochub, A. B. Kotov, A. E. Starikova, V. V. Sharygin, S. D. Velikoslavinsky, A. M. Larin, A. M. Mazukabzov, E. V. Tolmacheva, E. A. Khromova (2016): Genesis of the Katugin rare-metal ore deposit: Magmatism versus metasomatism. Russian Journal of Pacific Geology 10, 155–167.; Starikova, A. E., Bazarova, E. P., Savel’eva, V. B., Sklyarov, E. V., Khromova, E. A., & Kanakin, S. V. (2019) Pyrochlore-Group Minerals in the Granite-Hosted Katugin Rare-Metal Deposit, Transbaikalia, Russia. Minerals, 9(8), 490.
Saint Helena
 
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
Yurk Yu.Yu., Gurov E.P., Gurova E.P. (1973) Pecularities of fluorin mineralogy of Ukrainian crystalline shield, - Naukova Dumka, Kiev, pp.184 (in Russian).; 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
 
  • Colorado
    • El Paso Co.
      • Cheyenne Mining District (St. Peters Dome Mining District)
Minerals of Colorado (1997) Eckel, E. B.
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, 120; "Minerals of Colorado, updated & revised", p. 14, by Eckel, Edwin B., 1997
Minerals of Colorado (1997) E.B. Eckel; Am Min 51:299-323
Pavel M. Kartashov analytical data, Dean Allum specimens
Minerals of Colorado (1997) Eckel, E. B.; Am Min 51:299-323
  • Nevada
    • Mineral Co.
      • Fitting Mining District
        • Gillis Range
Mineralogical Record: 31: 204.
  • Texas
    • Hudspeth Co.
      • Sierra Blanca Peaks
O'Neill, L. C. (2014). REE-Be-UF mineralization of the Round Top laccolith, Sierra Blanca Peaks, Trans-Pecos Texas (MS dissertation).
  • Utah
    • Juab Co.
      • Honeycomb Hills
Mineralogical Record: 12(6): 381.
  • Virginia
    • Amelia Co.
      • Winterham
[L.E. Kearns, 1995 - Mineralogical Record Vol 26 No.6 - "Alumino-Fluorides from the Morefield Pegmatite"]; Richards, R. P., Kearns, L. E., & Cook, W. R. (1998). Morphology of Chiolite twins from the Morefield mine, Amelia County, Virginia. Canadian mineralogist, 36, 1009-1016.
 
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