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Törnebohmite-(Ce)

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Bastnäs mines, Riddarhyttan, Skinnskatteberg, Västmanland, Sweden
© Pavel M. Kartashov

Show Törnebohmite-(Ce) Photos (7)
Formula:
(Ce,La)
 
2
Al(SiO
 
4
)
 
2
OH
Colour:Olive-greenHardness:4½
Name:Named after Alfred Elis Törnebohm (1838-1911), geologist, a pioneer in the study of the Archean rocks of central Sweden.


Törnebohmite-(Ce)-Törnebohmite-(La) Series.

Classification of Törnebohmite-(Ce)

IMA status:Approved
Strunz 8th edition ID:8/B.19-20
Nickel-Strunz 10th (pending) edition ID:9.AG.45

9 : SILICATES (Germanates)
A : Nesosilicates
G : Nesosilicates with additional anions; cations in > [6] +- [6] coordination
Dana 8th edition ID: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
Hey's CIM Ref.:16.13.2

16 : Silicates Containing Aluminum and other Metals
13 : Aluminosilicates of the rare earths
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Type Occurrence of Törnebohmite-(Ce)

Type Locality:Bastnäs mines, Riddarhyttan, Skinnskatteberg, Västmanland, Sweden

Physical Properties of Törnebohmite-(Ce)

Lustre:Waxy
Colour:Olive-green
Hardness (Mohs):4½

Optical Data of Törnebohmite-(Ce)

Type:Biaxial (+)
RI values: nα = 1.845 nβ = 1.852 nγ = 1.878
2V:Measured: 26° , Calculated: 56°
Maximum Birefringence:δ = 0.033

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

Chemical Properties of Törnebohmite-(Ce)

Formula:
(Ce,La)
 
2
Al(SiO
 
4
)
 
2
OH
Essential elements:Al, Ce, H, O, Si
All elements listed in formula:Al, Ce, H, La, O, Si

Relationship of Törnebohmite-(Ce) to other Species

Series:Forms a series with Törnebohmite-(La) (see here)
Related Minerals - Nickel-Strunz Grouping):

- +
9.AG.05Abswurmbachite
CuMn
3+
6
O
 
8
(SiO
 
4
)
9.AG.05Braunite
Mn
2+
 
Mn
3+
6
[O
 
8
|SiO
 
4
]
9.AG.05Neltnerite
CaMn
3+
6
[O
 
8
|SiO
 
4
]
9.AG.05Braunite-II
CaMn
3+
14
SiO
 
24
9.AG.10Långbanite
(Mn
2+
 
,Ca)
 
4
(Mn
3+
 
,Fe
3+
 
)
 
9
Sb
5+
 
[O
 
8
|SiO
 
4
]
 
2
9.AG.15Malayaite
CaSn[O|SiO
 
4
]
9.AG.15Titanite
CaTi[O|SiO
 
4
]
9.AG.15Vanadomalayaite
CaV
4+
 
[O|SiO
 
4
]
9.AG.20Cerite-(Ce)
(Ce,Ca)
 
9
(Fe,Mg)(SiO
 
4
)
 
3
[SiO
 
3
(OH)]
 
4
(OH)
 
3
9.AG.20Cerite-(La)
(La,Ce,Ca)
 
9
(Fe,Ca,Mg)(SiO
 
4
)
 
3
[SiO
 
3
(OH)]
 
4
(OH)
 
3
9.AG.20Aluminocerite-(Ce)
(Ce,La,Ca)
 
9
(Al,Fe
3+
 
)(SiO
 
4
)
 
3
[SiO
 
3
(OH)]
 
4
(OH)
 
3
9.AG.25Trimounsite-(Y)
Y
 
2
Ti
 
2
[O
 
5
|SiO
 
4
]
9.AG.25Yftisite-(Y)
(Y,Dy,Er)
 
4
(Ti,Sn)O(SiO
 
4
)
 
2
(F,OH)
 
6
9.AG.30Sitinakite
KNa
 
2
Ti
 
4
Si
 
2
O
 
13
(OH)·2H
 
2
O
9.AG.35Kittatinnyite
Ca
 
2
Mn
 
2
Mn(SiO
 
4
)
 
2
(OH)
 
4
·9H
 
2
O
9.AG.40aNatisite
Na
 
2
Ti[O|SiO
 
4
]
9.AG.40bParanatisite
Na
 
2
Ti[O|SiO
 
4
]
9.AG.45Törnebohmite-(La)
(La,Ce)
 
2
Al(SiO
 
4
)
 
2
OH
9.AG.50Kuliokite-(Y)
Y
 
4
Al(SiO
 
4
)
 
2
(OH)
 
2
F
 
5
9.AG.55Chantalite
CaAl
 
2
[(OH)
 
4
|SiO
 
4
]
9.AG.60Mozartite
CaMn
3+
 
[OH|SiO
 
4
]
9.AG.60Vuagnatite
CaAl[OH|SiO
 
4
]
9.AG.65Hatrurite
Ca
 
3
[O|SiO
 
4
]
9.AG.70Jasmundite
Ca
 
11
[O
 
2
|S|(SiO
 
4
)
 
4
]
9.AG.75Afwillite
Ca
 
3
[HSiO
 
4
]
 
2
 · 2H
 
2
O
9.AG.80Bultfonteinite
Ca
 
2
[F|HSiO
 
4
] · H
 
2
O
9.AG.85Zoltaiite
BaV
4+
2
V
3+
12
Si
 
2
O
 
27
9.AG.90Tranquillityite
(Fe
2+
 
,Ca)
 
8
(Zr,Y)
 
2
Ti
 
3
[O
 
4
|SiO
 
4
]
 
3
Related Minerals - Hey's Index Grouping:

- +
16.13.1Vyuntspakhkite-(Y)
Y
 
4
Al
 
3
Si
 
5
O
 
18
(OH)
 
5
16.13.3Törnebohmite-(La)
(La,Ce)
 
2
Al(SiO
 
4
)
 
2
OH
16.13.4Allanite-(Y)
{CaY}{Al
 
2
Fe
2+
 
}[O|OH|SiO
 
4
|Si
 
2
O
 
7
]
16.13.5Allanite-(Ce)
{CaCe}{Al
 
2
Fe
2+
 
}[O|OH|SiO
 
4
|Si
 
2
O
 
7
]
16.13.6Dollaseite-(Ce)
{CaCe}{MgAlMg}[F|OH|SiO
 
4
|Si
 
2
O
 
7
]
16.13.8Dissakisite-(Ce)
{CaCe}{Al
 
2
Mg}[O|OH|SiO
 
4
|Si
 
2
O
 
7
]

Other Names for Törnebohmite-(Ce)

Other Languages:
German:Törnebohmit-(Ce)
Russian:Торнебомит-(Ce)

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 Törnebohmite-(Ce)

Reference List:Sverig. Geol. Unders. (1921), ser. C, 14, 304.

American Mineralogist (1921): 6: 118.

American Mineralogist (1982): 67: 1021-1028.

Internet Links for Törnebohmite-(Ce)

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    Localities for Törnebohmite-(Ce)

    Hide Locality List
    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.
    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
    France
     
    • Midi-Pyrénées
      • Ariège
        • Luzenac
    		AmMin 88:223-228
    Norway
     
    • Aust-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
      • Tysfjord
    		Collection of Tomas Husdal
    Russia
     
    • Eastern-Siberian Region
      • Transbaikalia (Zabaykalye)
        • Buriatia (Buryatia) Republic
          • Vitim Plateau
            • Biraya and Bya Rivers confluence area (Chara Basin)
    		C. Lemanski, Jr. (re-entry of lost Mindat data).
      • Tuva Republic
        • 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.)
    • Urals Region
      • Southern Urals
        • Chelyabinsk Oblast'
          • Kyshtym (Kychtym; Kishtim)
    		N.V. Svyazhin Tornebohmite from alkaline province of Ural, - Zapiski VMO,1962,91,N1,pp. 97-99.
    South Korea
     
    • Chungcheongbukdo (Chungchong-pukto)
      • Chungju (Chung Won Kum; Chung-ju)
        • Joongwon-gun
          • Mt. Eorae
    		P.M. Kartashov data
    Sweden
     
    • Dalarna
      • Avesta
        • Möklinta ore field
    		No reference listed
    • Västmanland
      • Norberg
    		No reference listed
    No reference listed
      • Skinnskatteberg
        • Riddarhyttan
    		Geijer P: Sverig.Geol.Unders.(1921) ser. C, nr. 304
    No reference listed
    No reference listed
    USA
     
    • Colorado
      • Boulder Co.
        • Jamestown District
    		Minerals of Colorado (1997) Eckels, E. B.
    Minerals of Colorado (1997) E.B. Eckels
      • Teller Co.
    		Rocks & Minerals: 63: 457.
    Mineral and/or Locality
    Google
     
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 19th Nov 2009 04:56:40