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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 (1827-1905), 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). Redefined by IMA in 2014 (IMA 14-D) as a F-dominant species with ideal composition Y3Si3O10F.

Classification of Thalénite-(Y)

Redefined Approved 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
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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

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
Essential elements:
All elements listed in formula:

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+(HAsSi3O13)
9.BJ.30Medaite(Mn,Ca)6(V,As)Si5O18OH
9.BJ.35RuiziteCa2Mn23+[(OH)2|H2Si4O13] · 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)(Y,Yb)2[Si2O7]
14.8.3Keiviite-(Yb)(Yb,Y)2Si2O7
14.8.4Tombarthite-(Y)Y4(Si,H4)4O12-x(OH)4+2x
14.8.5Thortveitite(Sc,Y)2Si2O7
14.8.6Sazhinite-(Ce)Na3Ce[Si6O15] · 6H2O
14.8.7Monteregianite-(Y)(Na,K)6(Y,Ca)2Si16O38 · 10H2O
14.8.8Iraqite-(La)K(Ca,Na)2(La,Ce,Th)[(Si,Al)8O20]
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:
Geol. Fören. Stockhol Förh. (1898), 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

Internet Links for Thalénite-(Y)

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
    • Kangasala
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
        • Kawamata
No reference listed
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
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.
    • 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.
  • 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
        • Keivy Mountains
          • Western Keivy Massif
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
A.V. Voloshin, Ya.A. Pakhomovskii Minerals and mineralformation evolution in amazonite pegmatites of Kola peninsula, - Leningrad, Nauka, 1986, pp.168.
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
GFF (1898) 20, 308-312
  • Lappland
    • Jokkmokk
      • Varjisträsk
Natural History Museum, Stockholm Collection # 19980375
  • Värmland
    • Filipstad
      • Persberg district
No reference listed
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.
  • Colorado
    • Jefferson Co.
      • South Platte Pegmatite District
Rare-Earth Pegmatites of the South Platte District, Colorado CGS Res Ser 11
    • 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.
  • 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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