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Törnebohmite-(Ce)

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About Törnebohmite-(Ce)Hide

09438910015142472549865.jpg
Alfred E. Törnebohm
Formula:
(Ce,La)2Al(SiO4)2(OH)
Colour:
Olive-green
Lustre:
Waxy
Hardness:
Specific Gravity:
4.94
Crystal System:
Monoclinic
Name:
Named törnebohmite after Alfred Elis Törnebohm (1838-1911), geologist, and a pioneer in the study of the Archean rocks of central Sweden. Later renamed with the suffix indicating the dominant rare earth element.
This page provides mineralogical data about Törnebohmite-(Ce).


Classification of Törnebohmite-(Ce)Hide

Approved, 'Grandfathered' (first described prior to 1959)
9.AG.45

9 : SILICATES (Germanates)
A : Nesosilicates
G : Nesosilicates with additional anions; cations in > [6] +- [6] coordination
52.4.5.1

52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
4 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
16.13.2

16 : Silicates Containing Aluminum and other Metals
13 : Aluminosilicates of the rare earths

Physical Properties of Törnebohmite-(Ce)Hide

Transparency:
Transparent
Colour:
Olive-green
Hardness:
4½ on Mohs scale
Density:
4.94 g/cm3 (Measured)    5.12 g/cm3 (Calculated)

Optical Data of Törnebohmite-(Ce)Hide

Type:
Biaxial (+)
RI values:
nα = 1.845 nβ = 1.852 nγ = 1.878
2V:
Measured: 26° , Calculated: 56°
Max Birefringence:
δ = 0.033
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
strong
Pleochroism:
Strong
Comments:
Very strong; X = light rose to greenish yellow;
Y = bluish green; Z = light rose.

Chemical Properties of Törnebohmite-(Ce)Hide

Formula:
(Ce,La)2Al(SiO4)2(OH)
IMA Formula:
Ce2Al(SiO4)2(OH)

Crystallography of Törnebohmite-(Ce)Hide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 7.383(3) Å, b = 5.673(3) Å, c = 16.937(6) Å
β = 112.04°
Ratio:
a:b:c = 1.301 : 1 : 2.986
Unit Cell V:
657.54 ų (Calculated from Unit Cell)
Comment:
Pseudohexagonal

Geological EnvironmentHide

Paragenetic Mode(s):

Type Occurrence of Törnebohmite-(Ce)Hide

General Appearance of Type Material:
Fine-grained, massive; as inclusions in cerite.
Associated Minerals at Type Locality:
Reference:
Geijer, P. (1920) The cerium minerals of Bastnäs at Riddarhyttan. Sveriges Geologiska Undersökning Arsbok: 14(304): 1-24.

Synonyms of Törnebohmite-(Ce)Hide

Törnebohmite (in part)

Other Language Names for Törnebohmite-(Ce)Hide

Common AssociatesHide

Associated Minerals Based on Photo Data:
19 photos of Törnebohmite-(Ce) associated with Ferriallanite-(Ce){CaCe}{Fe3+AlFe2+}(Si2O7)(SiO4)O(OH)
15 photos of Törnebohmite-(Ce) associated with Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
8 photos of Törnebohmite-(Ce) associated with BrochantiteCu4(SO4)(OH)6
6 photos of Törnebohmite-(Ce) associated with Unnamed (O- and Fe-analogue of Västmanlandite-(Ce))Ca(Ce,La)3Al2Fe2+Fe3+(Si2O7)(SiO4)3O(OH)2
6 photos of Törnebohmite-(Ce) associated with Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
5 photos of Törnebohmite-(Ce) associated with Britholite-(Ce)(Ce,Ca)5(SiO4)3OH
4 photos of Törnebohmite-(Ce) associated with Håleniusite-(La)(La,Ce)OF
4 photos of Törnebohmite-(Ce) associated with Bastnäsite-(La)La(CO3)F
4 photos of Törnebohmite-(Ce) associated with Strontium-rich Calcite(Ca,Sr)CO3
4 photos of Törnebohmite-(Ce) associated with StrontianiteSrCO3

Related Minerals - Nickel-Strunz GroupingHide

9.AG.EdgrewiteCa9(SiO4)4F2Mon. 2/m : P21/b
9.AG.05AbswurmbachiteCuMn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.05BrauniteMn2+Mn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.05NeltneriteCaMn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.05Braunite-IICaMn3+14(SiO4)O20Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.10LångbaniteMn2+4Mn3+9Sb5+O16(SiO4)2Trig. 3m : P3m1
9.AG.15MalayaiteCaSn(SiO4)OMon.
9.AG.15TitaniteCaTi(SiO4)OMon. 2/m : P21/b
9.AG.15VanadomalayaiteCaV4+(SiO4)OMon.
9.AG.15Natrotitanite(Na0.5Y0.5)Ti(SiO4)OMon. 2/m : B2/b
9.AG.15ŻabińskiiteCa[Al0.5(Ta,Nb)0.5)](SiO4)OTric. 1
9.AG.20Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3Trig. 3m : R3c
9.AG.20Ferricerite-(La)(La,Ce,Ca)9Fe3+(SiO4)3(SiO3OH)4(OH)3Trig. 3m : R3c
9.AG.20Aluminocerite-(Ce)(Ce,La,Ca)9(Al,Fe3+)(SiO4)3(HSiO4)4(OH)3Trig. 3m : R3c
9.AG.25Trimounsite-(Y)Y2Ti2(SiO4)O5Mon.
9.AG.25Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
9.AG.25Mieite-(Y)Y4Ti(SiO4)2O[F,(OH)]6Orth. mmm (2/m 2/m 2/m) : Cmcm
9.AG.30SitinakiteKNa2Ti4(SiO4)2O5(OH) · 4H2OTet.
9.AG.35KittatinnyiteCa2Mn2Mn(SiO4)2(OH)4 · 9H2OHex.
9.AG.40aNatisiteNa2Ti(SiO4)OTet.
9.AG.40bParanatisiteNa2Ti(SiO4)OOrth.
9.AG.45Törnebohmite-(La)(La,Ce)2Al(SiO4)2(OH)
9.AG.50Kuliokite-(Y)Y4Al(SiO4)2(OH)2F5Tric. 1 : P1
9.AG.55ChantaliteCaAl2(SiO4)(OH)4Tet. 4/m : I41/a
9.AG.60MozartiteCaMn3+(SiO4)(OH)Orth. 2 2 2 : P21 21 21
9.AG.60VuagnatiteCaAl(SiO4)(OH)Orth.
9.AG.65HatruriteCa3(SiO4)OTrig.
9.AG.70JasmunditeCa11(SiO4)4O2STet. 4 2m : I4m2
9.AG.75AfwilliteCa3(HSiO4)2 · 2H2OMon. m : Bb
9.AG.80BultfonteiniteCa2(HSiO4)F · H2OTric.
9.AG.85ZoltaiiteBaV4+2V3+12(SiO4)2O19Trig. 3 : P3
9.AG.90Tranquillityite(Fe2+,Ca)8(Zr,Y)2Ti3(SiO4)3O12Hex.

Related Minerals - Dana Grouping (8th Ed.)Hide

52.4.5.2Törnebohmite-(La)(La,Ce)2Al(SiO4)2(OH)

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

16.13.1Vyuntspakhkite-(Y)(Y,Yb)4Al2.5-1.5(Si,Al)1.5-2.5(SiO4)4O(OH)7Mon.
16.13.3Törnebohmite-(La)(La,Ce)2Al(SiO4)2(OH)
16.13.4Allanite-(Y){CaY}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon.
16.13.5Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
16.13.6Dollaseite-(Ce){CaCe}{MgAlMg}(Si2O7)(SiO4)F(OH)Mon. 2/m : P21/m
16.13.8Dissakisite-(Ce){CaCe}{Al2Mg}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m

Other InformationHide

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 Törnebohmite-(Ce)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Geijer, P. (1920) The cerium minerals of Bastnäs at Riddarhyttan. Sveriges Geologiska Undersökning Arsbok: 14(304): 1-24.
Wherry, E.T. (1921) New minerals. American Mineralogist: 6: 118-119 .
Holtstam, D., Andersson, U.B. (2007) The REE minerals of the Bastnäs-type deposits, south-central Sweden. The Canadian Mineralogist: 45: 1073-1114.
Levinson, A.A. (1966) A system of nomenclature for rare-earth minerals. American Mineralogist: 51: 152-158.
Nickel, E.H., Mandarino, J.A. (1987) Procedures involving the IMA Commission on New Minerals and Mineral Names and guidelines on mineral nomenclature. American Mineralogist: 72: 1031-1042.
Shen, J., Moore, P.B. (1982) Törnebohmite, RE2Al(OH)[SiO4]2: crystal structure and genealogy of RE(III)Si(IV)‹—›Ca(II)P(V) isomorphisms. American Mineralogist: 67: 1021-1028.

Internet Links for Törnebohmite-(Ce)Hide

Localities for Törnebohmite-(Ce)Hide

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.
Australia
 
  • South Australia
    • Flinders Ranges
      • North Flinders Ranges
        • Mt Babbage area (Inlier)
Wulser PA et al. U-Th-REE mobility in and around the Mt Painter & Mt Babbage inliers, Northern Flinders Ranges, South Australia. 2005, Abstracts Geol. Soc. Austra. Vol.78
China
 
  • Henan
    • Nanyang
      • Xixia County
Qu, K., Sima, X., Zhou, H., Xiao, Z., Tu, J., Yin, Q., ... & Li, J. (2019). In situ LA-MC-ICP-MS and ID-TIMS U-Pb ages of bastnäsite-(Ce) and zircon from the Taipingzhen hydrothermal REE deposit: New constraints on the later Paleozoic granite-related U-REE mineralization in the North Qinling Orogen, Central China. Journal of Asian Earth Sciences, 173, 352-363.
France
 
  • Occitanie
    • Ariège
      • Foix
        • Luzenac
AmMin 88:223-228
Mongolia
 
  • Khovd Province
    • Myangad District
      • Khaldzan Buragtag massif
Kovalenko, V. I., Yarmolyuk, V. V., Sal nikova, E. B., Kartashov, P. M., Kovach, V. P., Kozakov, I. K., ... & Yakovleva, S. Z. (2004). The Khaldzan-Buregtei Massif of peralkaline rare-metal igneous rocks: structure, geochronology, and geodynamic setting in the Caledonides of Western Mongolia. Petrology c/c of Petrologiia, 12(5), 412-436.
Norway
 
  • Agder
    • Iveland
      • Kåbuland
Neumann, H. & Bergstøl, S. (1963): Contributions to the mineralogy of Norway No.17. Cerianite from cleavelandite pegmatite dykes in Iveland. Norsk Geologisk Tidsskrift 43,247-255 +Neumann, H. (1985): Norges Mineraler. Norges geologiske undersøkelse. Skrifter 68, p. 85
  • Nordland
    • Hamarøy
      • Drag
        • Eivollen
Husdal, T. (2011): Tysfjordgranittens pegmatitter. Stein. 38 (4): 4-35
    • Narvik
Husdal, T. (2011): Tysfjordgranittens pegmatitter. Stein. 38 (4): 4-35
Husdal, T. (2008): The minerals of the pegmatites within the Tysfjord granite, northern Norway. Norsk Bergverksmuseum, skrift 38, 5-28.
Romania
 
  • Harghita
Hirtopanu Paulina, Andersen C. Jens, Fairhurst J. Robert and Jakab Gyula (2013) Allanite-(Ce) and its associations, from the Ditrau alkaline intrusive massif. Proc. Rom. Acad., Series B, 2013, 15(1), p. 59–74
Russia
 
  • Chelyabinsk Oblast
    • Kyshtym
N.V. Svyazhin Tornebohmite from alkaline province of Ural, - Zapiski VMO,1962,91,N1,pp. 97-99.; Kasatkin, A. V., Zubkova, N. V., Pekov, I. V., Chukanov, N. V., Škoda, R., Polekhovsky, Y. S., ... & Pushcharovsky, D. Y. The mineralogy of the historical Mochalin Log REE deposit, South Urals, Russia. Part I. New gatelite-group minerals ferriperbøeite-(La),(CaLa 3)(Fe 3+ Al 2 Fe 2+)[Si 2 O 7][SiO 4] 3 O (OH) 2, and perbøeite-(La),(CaLa 3)(Al 3 Fe 2+)[Si 2 O 7][SiO 4] 3 O (OH) 2. Mineralogical Magazine, 1-35.
  • Irkutsk Oblast
    • Vitim Plateau
      • Biraya and Bya Rivers confluence area (Chara Basin)
Koneva A.A., Konev A.A., Vladykin N.V. (2010) Vein complex of the Biraya carbonatite deposit. in Abstracts of XXVII International conference School «Geochemistry of Alkaline rocks». – Moscow-Koktebel’. pp. 240 pp.
Mills, S. J., Kartashov, P. M., Kampf, A. R., Konev, A. A., Koneva, A. A., & Raudsepp, M. (2012). Cordylite-(La), A New Mineral Species In Fenite From The Biraya Fe–Ree Deposit, Irkutsk, Russia. The Canadian Mineralogist, 50(5), 1281-1290.
  • Tuva
    • Sangilen Upland
Kapustin Yu.L. (1989) Cerite and ternebohmite from fenites of alkaline massifs of Tuva, - Zapiski VMO, 118(4), p. 47-56 (in Rus.)
South Korea
 
  • North Chungcheong Province
    • Chungju City
      • Joongwon-gun
        • Mt. Eorae
P.M. Kartashov data
Sweden
 
  • Dalarna County
    • Avesta
Jansson, M. () Förekomster med ceriummineral i stråket Möklinta, Norberg, Riddarhyttan och Nora.
No reference listed
Jansson, M. (2001) Förekomster med ceriummineral i stråket Möklinta, Norberg, Riddarhyttan och Nora.
  • Västmanland County
    • Norberg
No reference listed
No reference listed
    • Skinnskatteberg
      • Riddarhyttan
Geijer,P. (1920). The cerium minerals of Bastnäs at Riddarhyttan. Sveriges Geologiska Undersökning, Serie C, 304: 24; Holtstam, D., Bindi, L., Hålenius, U., & Andersson, U. B. (2017). Delhuyarite-(Ce)–Ce 4 Mg (Fe 3+ 2 W)□(Si 2 O 7) 2 O 6 (OH) 2–a new mineral of the chevkinite group, from the Nya Bastnäs Fe–Cu–REE deposit, Sweden. European Journal of Mineralogy, ejm2635_pap_gsw.
Holtstam, D., Bindi, L., Hålenius, U., & Andersson, U. B. (2017). Delhuyarite-(Ce)–Ce 4 Mg (Fe 3+ 2 W)□(Si 2 O 7) 2 O 6 (OH) 2–a new mineral of the chevkinite group, from the Nya Bastnäs Fe–Cu–REE deposit, Sweden. European Journal of Mineralogy. DOI: 10.1127/ejm/2017/0029-2635
Holtstam, D., Andersson, U.B. (2007): The REE minerals of the Bastnäs-type deposits, South-Central Sweden. Canadian Mineralogist. 45, 1073-1114
No reference listed
Jonsson, E., Högdahl, K., Sahlström, F., Nysten, P. & Sadeghi, M. The palaeoproterozoic skarn-hosted REE mineralisations of Bastnäs-type: Overview and mineralogical- geological character. ERES2014: 1st European Rare Earth Resources Conference|Milos|04 07/09/2014: 382-389
USA
 
  • Colorado
    • Boulder Co.
      • Jamestown Mining District
Minerals of Colorado (1997) Eckel, E. B.
        • Jamestown
Goddard, E.N. and Glass, J.J. (1940): Deposits of radioactive cerite near Jamestown, Colorado. American Mineralogist. 25,381-404
Minerals of Colorado (1997) E.B. Eckel
    • Teller Co.
Rocks & Minerals: 63: 457.
 
Mineral and/or Locality  
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