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Thalénite-(Y)

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Formula:
Y3Si3O10F
System:
Monoclinic
Colour:
Flesh-pink, brown or ...
Hardness:
6
Name:
Named after Tobia Robert Thalén (28 December 1827 – 27 July 1905), Swedish physicist and astronomer.
This mineral is found in granite pegmatites, associated with Fergusonite, Magnetite, etc.
Earlier defined as the OH-analog of fluorthalénite-(Y) (now descredited). Škoda et al (2015) re-examined the type material and found that it showed dominance of F over OH, thus the type material actually corresponds to the species earlier defined as fluorthalénite-(Y).

Redefined by IMA in 2014 (IMA 14-D) as a F-dominant species with ideal composition Y3Si3O10F and given the name Thalénite-(Y) as it has historical priority.


Classification of Thalénite-(Y)

Approved
Notes:
Renamed by the IMA
Approval History:
Renamed by IMA: 2014
9.BJ.20

9 : SILICATES (Germanates)
B : Sorosilicates
J : Sorosilicates with Si3O10, Si4O11, etc. anions; cations in octahedral [6] and greater coordination
55.2.1b.2

55 : SOROSILICATES Si2O7 Groups,Generally with no Additional Anions
2 : Si2O7 Groups, Generally with no Additional Anions with cations in [6] coordination
14.8.1

14 : Silicates not Containing Aluminum
8 : Silicates of Group III metals other than Al

Type Occurrence of Thalénite-(Y)

Physical Properties of Thalénite-(Y)

Greasy
Diaphaneity (Transparency):
Translucent
Colour:
Flesh-pink, brown or greenish.
Streak:
White
Hardness (Mohs):
6
Tenacity:
Brittle

Crystallography of Thalénite-(Y)

Crystal System:
Monoclinic
Cell Parameters:
a = 7.3464(4) Å, b = 11.1726(5) Å, c = 10.4180(5) Å
β = 97.318(4)°
Ratio:
a:b:c = 0.658 : 1 : 0.932
Unit Cell Volume:
V 848.13 ų
Z:
4
Comment:
Spacegroup P21/n

Optical Data of Thalénite-(Y)

Type:
Biaxial (-)
RI values:
nα = 1.731 nβ = 1.738 nγ = 1.744
2V:
Measured: 68° , Calculated: 84°
Max Birefringence:
δ = 0.013
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r > v

Chemical Properties of Thalénite-(Y)

Formula:
Y3Si3O10F
All elements listed in formula:
Analytical Data:
Empirical formula from Škoda et. al (2015), re-examination of type specimen

Relationship of Thalénite-(Y) to other Species

9.BJ.05OrientiteCa8Mn103+(SiO4)3(Si3O10)3(OH)10 · 4H2O
9.BJ.10RosenhahniteHCa3[Si3O9(OH)]
9.BJ.15TrabzoniteCa4(Si3O9)(OH)2
9.BJ.25TiragalloiteMn42+As5+Si3O12(OH)
9.BJ.30MedaiteMn62+V5+Si5O18(OH)
9.BJ.35RuiziteCa2Mn23+[Si4O11(OH)2](OH)2·2H2O
9.BJ.40Ardennite-(As)Mn42+Al4(AlMg)(AsO4)(SiO4)2(Si3O10)(OH)6
9.BJ.40Ardennite-(V)Mn42+Al4(AlMg)(VO4)(SiO4)2(Si3O10)(OH)6
9.BJ.45KilchoaniteCa6(SiO4)(Si3O10)
9.BJ.50KornerupineMg3Al6(Si,Al,B)5O21(OH)
9.BJ.50Prismatine(◻,Fe,Mg)(Mg,Al,Fe)5Al4Si2(Si,Al)2(B,Si,Al)(O,OH,F)22
9.BJ.55ZunyiteAl13Si5O20(OH,F)18Cl
9.BJ.60HubeiteCa2Mn2+Fe3+[HSi4O13] · 2H2O
9.BJ.65Cassagnaite(Ca,Mn2+)4(Fe3+,Mn3+,Al)4(V3+,Mg,Al)2(Si3O10)(SiO4)2(OH,O)8
14.8.2Keiviite-(Y)Y2Si2O7
14.8.3Keiviite-(Yb)Yb2Si2O7
14.8.4Tombarthite-(Y)Y4(Si,H4)4O12-x(OH)4+2x
14.8.5ThortveititeSc2Si2O7
14.8.6Sazhinite-(Ce)Na2CeSi6O14•6H2O
14.8.7Monteregianite-(Y)(Na,K)6(Y,Ca)2Si16O38 · 10H2O
14.8.8Iraqite-(La)KCa2(La,Ce,Th)Si8O20
14.8.9Ashcroftine-(Y)K5Na5(Y,Ca)12Si28O70(OH)2(CO3)8 · 8H2O
14.8.10Nordite-(La)(La,Ce)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17
14.8.11Nordite-(Ce)(Ce,La)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17
14.8.12Jervisite(Na,Ca,Fe2+)(Sc,Mg,Fe2+)Si2O6
14.8.13Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
14.8.14CascanditeCa(Sc,Fe3+)(HSi3O9)

Other Names for Thalénite-(Y)

Name in Other Languages:

Other Information

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 Thalénite-(Y)

Reference List:
Benedicks C (1898): Mötet den 3 November 1898 [Thalénit, frän Österby i Dalarne]. Geologiska Föreningens i Stockholm Förhandlingar 20, 308-312

Kornev, A. N., Batalieva, N. G., Maksimov, B. A., Ilyukhin, V. V. & Belov, N. V. (1972). Crystal structure of thalenite Y3[Si3O10](OH). Doklady Akademii Nauk SSSR 202, 1324-1327. (In Russian.)

American Mineralogist (1986): 71: 188.

Yakubovich, O. V.; Voloshin, A. V.; Pakhomovskii, Ya. A.; Simonov, M. A. (1988): Refined crystal structure of thalenite. Kristallografiya 33, 605-608. (In Russian.) [English version: Soviet Physics – Crystallography 33, 356-358.

IMA 14-D, CNMNC Newsletter No. 22, 2014

Škoda, R., Plášil, J., Jonsson, E., Čopjaková, R., Langhof, J., Vašinová Galiová, M. (2015): Redefinition of thalénite-(Y) and discreditation of fluorthalénite-(Y): A re-investigation of type material from the Österby pegmatite, Dalarna, Sweden, and from additional localities. Mineralogical Magazine, 79, 965-983.

Internet Links for Thalénite-(Y)

mindat.org URL:
http://www.mindat.org/min-3931.html
Please feel free to link to this page.

Localities for Thalénite-(Y)

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Finland
 
  • Western and Inner Finland Region
    • Valkeakoski
Vorma, A., Ojanperä, P., Hoffrén, V., Siivola, J. & Löfgren, A.(1966): On the rare earth minerals from the Pyörönmaa pegmatite in Kangasala, SW-Finland. Bulletin de la Commission Géologique Finlande 222. 241-274
Japan
 
  • Honshu Island
    • Tohoku Region
      • Fukushima Prefecture
        • Ishikawa town (Ishikawa-machi)
Škoda, R., Plášil, J., Jonsson, E., Čopjaková, R., Langhof, J., Vašinová Galiová, M. (2015): Redefinition of thalénite-(Y) and discreditation of fluorthalénite-(Y): A re-investigation of type material from the Österby pegmatite, Dalarna, Sweden, and from additional localities. Mineralogical Magazine, 79, 965-983.
        • Kawamata
          • Iizaka Village (Iisaka)
Am Min 69:196-199; Kozo Nagashim & Akira Kato (1966) Chemical Studies of Minerals Containing Rarer Elements from the Far East District. LX. Thalenite from Suishoyama, Kawamata-machi, Fukushima Prefecture, Japan Bulletin of the Chemical Society of Japan 39:925-928; Škoda, R., Plášil, J., Jonsson, E., Čopjaková, R., Langhof, J., Vašinová Galiová, M. (2015): Redefinition of thalénite-(Y) and discreditation of fluorthalénite-(Y): A re-investigation of type material from the Österby pegmatite, Dalarna, Sweden, and from additional localities. Mineralogical Magazine, 79, 965-983.
Kazakhstan
 
  • Eastern Kazakhstan Province (Shyghys Qazaqstan Oblysy; Vostochno-Kazakhstanskaya Oblast')
    • Tarbagatai Range
      • Akzhaylyautas Mts (Akzhailyautas Mts; Akjaylautas Mts; Akzhalautas Mts)
STEPANOV, A.V., BEKENOVA, G.K., LEVIN, V.L., HAWTHORNE, F.C. & DOBROVOL’SKAYA, E.A. (2012): Tarbagataite,(K,□)2(Ca,Na)(Fe2+,Mn)7Ti2(Si4O12)2O2(OH)4(OH,F), a new astrophyllite-group mineral species from the Verkhnee Espe deposit, Akjailyautas Mountains, Kazakhstan: description and crystal structure Canadian Mineralogist 50,159-168.
Norway
 
  • Aust-Agder
    • Evje og Hornnes
Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-31
    • Iveland
      • Ivedal
Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311
Pers. commentary Borghild Nilssen august 1968
      • Rossås (Rosås)
Bjørlykke, H.( 1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311
Bjørlykke, H.( 1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311
      • Støledalen
Schetelig, J.(1931): Remarks on thalenite from some new occurrences in Southern Norway. Norsk Geologisk Tidsskrift 12, 507-519; Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311
  • Nordland
    • Hamarøy
Husdal, T. (2008): The minerals of the pegmatites within the Tysfjord granite, northern Norway. Norsk Bergverksmuseum, skrift 38, 5-28.; Pekov, I.V., Zubkova, N.V., Chukanov, N.V., Husdal, T.A., Zadov, A.E., Pushcharovsky, D.Yu. (2011): Fluorbritholite-(Y), (Y,Ca,Ln)5[(Si,P)O4]3 F, a new mineral of the britholite group. Neues Jahrbuch für Mineralogie - Abhandlungen, 188, 191-197.
    • Rana
Grauch et al. (1994): Høgtuvaite, a new beryllian member of the aenigmatite group fom Norway, with x-ray data on aenigmatite. Canadian Mineralogist. 32: 439-448.
    • Tysfjord
Vogt, Th. (1922): Über Thalenit von Hundholmen im nördlichen Norwegen. in Brøgger, W.C, Vogt, Th. & Schetelig, J. (1922): Die Mineralien der südnorwegischen Granitpegmatitgänge. II. Silikate der seltenen Erde. Videnskapsselskapets Skrifter. I.Mat-Naturv. Klasse 1922. 11, 19-47 + plates VII-IX.
Husdal, T. (2008): The minerals of the pegmatites within the Tysfjord granite, northern Norway. Norsk Bergverksmuseum, skrift 38, 5-28.; Schlüter, J., Malcherek, T., Husdal, T. A. (2009): The new mineral stetindite, CeSiO4, a cerium end-member of the zircon group. Neues Jahrbuch fur Mineralogie - Abhandlungen, 186(2), 195-200
  • Telemark
    • Drangedal
      • Tørdal
Kristiansen, R. (1998): Høydalen Litium-pegmatitt-Tørdal i Telemark. STEIN 25 (4), 21-30
  • Vest-Agder
    • Vennesla
      • Øvrebø
Griffin, W.L., Nilssen, B. & Jensen, B.B. (1979): Britholite-(Y) and its alteration: Reiarsdal, Vest-Agder, south Norway. Norsk Geologisk Tidsskrift 59: 265-271
Russia
 
  • Eastern-Siberian Region
    • Tuva Republic
no reference
  • Northern Region
    • Komi Republic
      • Prepolar Ural
        • Kozhim River Basin
          • Maldynyrd range (Maldy-nyrd range)
            • Grubependity Lake
Irina V. Kozyreva data
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Belye Tundry Massif
Lyalina, L.M., Savchenko, Ye.E., Selivanova, E.A. [Лялина Л.М., Савченко Е.Э., Селиванова Е.А.] (2007): Fluorthalénite-(Y) and crystalline britholite-(Y) in a pegmatite of the Belye Tundry alkali granite massif, Kola Peninsula [Фторталенит-(Y) и кристаллический бритолит-(Y) в пегматите щелочно-гранитного массива Белые тундры, Кольский полуостров]. Mineralogy in the whole space of this word. Proceedings of IV Fersman Scientific Session. Apatity, 4-6 June 2007 [Минералогия во всем пространстве сего слова. Труды IV Ферсмановской научной сессии. Апатиты, 4-6 июня 2007]. K & M, Apatity, 174-177; Lyalina, L.M., Selivanova, E.A., Savchenko, Ye.E., Zozulya, D.R., Kadyrova, G.I. (2014): Minerals of the gadolinite-(Y)–hingganite-(Y) series in the alkali granite pegmatites of the Kola Peninsula. Geology of Ore Deposits, 56, 675-684.
        • Keivy Mountains
          • Western Keivy Massif
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Voloshin A.V., Pakhomovskii Ya.A. [Волошин А.В., Пахомовский Я.А.] (1997): Fluorthalénite-(Y), a new mineral from amazonite randpegmatites of the Kola Peninsula [Фторталенит-(Y) - новый минерал из амазонитовых рандпегматитов Кольского полуострова]. Dokl. RAN [Докл. РАН], 354, 1, 77-78 (in Russian); Pekov I.V. (1998): Minerals first discovered on the territory of the former Soviet Union. Ocean Pictures, Moscow, 369 pp.
Spain
 
  • Madrid
Tanago, J. G., Lozano, P. L., Larios, A. , La Iglesia, A. (2012) Stokesite crystals from La Cabrera, Madrid, Spain. Mineralogical Record 43:499-508
Sweden
 
  • Dalarna
    • Borlänge
      • St Tuna
Natural History Museum, Stockholm collection # 19420038, 19420039
    • Säter
      • St. Skedevi
Benedicks C (1898): Mötet den 3 November 1898 [Thalénit, frän Österby i Dalarne]. Geologiska Föreningens i Stockholm Förhandlingar 20, 308-312; Škoda, R., Plášil, J., Jonsson, E., Čopjaková, R., Langhof, J., Vašinová Galiová, M. (2015): Redefinition of thalénite-(Y) and discreditation of fluorthalénite-(Y): A re-investigation of type material from the Österby pegmatite, Dalarna, Sweden, and from additional localities. Mineralogical Magazine, 79, 965-983.
  • Lappland
    • Jokkmokk
      • Varjisträsk
Natural History Museum, Stockholm Collection # 19980375; Škoda, R., Plášil, J., Jonsson, E., Čopjaková, R., Langhof, J., Vašinová Galiová, M. (2015): Redefinition of thalénite-(Y) and discreditation of fluorthalénite-(Y): A re-investigation of type material from the Österby pegmatite, Dalarna, Sweden, and from additional localities. Mineralogical Magazine, 79, 965-983.
  • Värmland
    • Filipstad
      • Persberg district
Škoda, R., Plášil, J., Jonsson, E., Čopjaková, R., Langhof, J., Vašinová Galiová, M. (2015): Redefinition of thalénite-(Y) and discreditation of fluorthalénite-(Y): A re-investigation of type material from the Österby pegmatite, Dalarna, Sweden, and from additional localities. Mineralogical Magazine, 79, 965-983.
USA
 
  • Arizona
    • Mohave Co.
      • Boulder Springs
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 394; Pabst & Woodhouse (1964); Fitzpatrick, J. & Pabst, A. (1986), Thalenite from AZ, Am.Min.: 71:188-193; Galbraith, F.W. & Brennan (1959), Minerals of AZ: 99.; Škoda, R., Plášil, J., Jonsson, E., Čopjaková, R., Langhof, J., Vašinová Galiová, M. (2015): Redefinition of thalénite-(Y) and discreditation of fluorthalénite-(Y): A re-investigation of type material from the Österby pegmatite, Dalarna, Sweden, and from additional localities. Mineralogical Magazine, 79, 965-983.
  • Colorado
    • Jefferson Co.
      • South Platte Pegmatite District
Rare-Earth Pegmatites of the South Platte District, Colorado CGS Res Ser 11; Škoda, R., Plášil, J., Jonsson, E., Čopjaková, R., Langhof, J., Vašinová Galiová, M. (2015): Redefinition of thalénite-(Y) and discreditation of fluorthalénite-(Y): A re-investigation of type material from the Österby pegmatite, Dalarna, Sweden, and from additional localities. Mineralogical Magazine, 79, 965-983.
    • Teller Co.
Min Rec 36:2 pp143-185
Adams, J. W.; Hildebrand, Fred A.; Havens, R. G. (1962): Thalenite from Teller County, Colorado. U.S. Geological Survey Professional Paper No. 450-D, 6-8.; Škoda, R., Plášil, J., Jonsson, E., Čopjaková, R., Langhof, J., Vašinová Galiová, M. (2015): Redefinition of thalénite-(Y) and discreditation of fluorthalénite-(Y): A re-investigation of type material from the Österby pegmatite, Dalarna, Sweden, and from additional localities. Mineralogical Magazine, 79, 965-983.
  • Texas
    • Burnet Co.
R&M 66:3 pp 196-224
    • Llano Co.
R&M 66:3 pp 196-224
  • Wisconsin
    • Marathon Co.
      • Wausau Intrusive Complex
        • Nine Mile Pluton
www.uwrf.edu/~wc01
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