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Thalénite-(Y)

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Formula:
Y
 
3
(Si
 
3
O
 
10
)(OH)
System:MonoclinicColour: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.
The OH-analog of fluorthalénite-(Y).

Classification of Thalénite-(Y)

IMA status:Approved
Strunz 8th edition ID:8/C.33-10
Nickel-Strunz 10th (pending) edition ID:9.BJ.20

9 : SILICATES (Germanates)
B : Sorosilicates
J : Sorosilicates with Si3O10, Si4O11, etc. anions; cations in octahedral [6] and greater coordination
Dana 8th edition ID: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
Hey's CIM Ref.: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)

Type Locality:Österby, St. Skedevi, Säter, Dalarna, Sweden

Physical Properties of Thalénite-(Y)

Lustre: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°
Maximum Birefringence:δ = 0.013

Chart 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:
Y
 
3
(Si
 
3
O
 
10
)(OH)
Simplified for copy/paste:Y3(Si3O10)(OH)
Essential elements:H, O, Si, Y
All elements listed in formula:H, O, Si, Y

Relationship of Thalénite-(Y) to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.BJ.05Orientite
Ca
 
2
Mn
2+
 
Mn
3+
2
(Si
 
3
O
 
10
)(OH)
 
4
9.BJ.10Rosenhahnite
HCa
 
3
[Si
 
3
O
 
9
(OH)]
9.BJ.15Trabzonite
Ca
 
4
(Si
 
3
O
 
10
) · 2H
 
2
O
9.BJ.20Fluorthalénite-(Y)
Y
 
3
(Si
 
3
O
 
10
)F
9.BJ.25Tiragalloite
Mn
2+
4
(HAsSi
 
3
O
 
13
)
9.BJ.30Medaite
(Mn,Ca)
 
6
(V,As)Si
 
5
O
 
18
OH
9.BJ.35Ruizite
Ca
 
2
Mn
3+
2
[(OH)
 
2
|H
 
2
Si
 
4
O
 
13
] · 2H
 
2
O
9.BJ.40Ardennite-(As)
Mn
2+
4
(Al,Mg)
 
6
(Si
 
3
O
 
10
)(SiO
 
4
)
 
2
(AsO
 
4
,VO
 
4
)(OH)
 
6
9.BJ.40Ardennite-(V)
Mn
2+
4
Al
 
4
(Mg,Al,Fe
3+
 
,Mn
3+
 
)
 
2
(Si
 
3
O
 
10
)(SiO
 
4
)
 
2
(VO
 
4
,SiO
 
4
)(OH)
 
6
9.BJ.45Kilchoanite
Ca
 
6
(SiO
 
4
)(Si
 
3
O
 
10
)
9.BJ.50Kornerupine
Mg
 
3
Al
 
6
(Si,Al,B)
 
5
O
 
21
(OH)
9.BJ.50Prismatine
(◻,Fe,Mg)(Mg,Al,Fe)
 
5
Al
 
4
Si
 
2
(Si,Al)
 
2
(B,Si,Al)(O,OH,F)
 
22
9.BJ.55Zunyite
Al
 
13
Si
 
5
O
 
20
(OH,F)
 
18
Cl
9.BJ.60Hubeite
Ca
 
2
Mn
2+
 
Fe
3+
 
[HSi
 
4
O
 
13
] · 2H
 
2
O
9.BJ.65Cassagnaite
(Ca,Mn
2+
 
)
 
4
(Fe
3+
 
,Mn
3+
 
,Al)
 
4
(V
3+
 
,Mg,Al)
 
2
(Si
 
3
O
 
10
)(SiO
 
4
)
 
2
(OH,O)
 
8
Related Minerals - Hey's Index Grouping:

- +
14.8.2Keiviite-(Y)
(Y,Yb)
 
2
[Si
 
2
O
 
7
]
14.8.3Keiviite-(Yb)
(Yb,Y)
 
2
Si
 
2
O
 
7
14.8.4Tombarthite-(Y)
Y
 
4
(Si,H
 
4
)
 
4
O
 
12-x
(OH)
 
4+2x
14.8.5Thortveitite
(Sc,Y)
 
2
Si
 
2
O
 
7
14.8.6Sazhinite-(Ce)
Na
 
3
Ce[Si
 
6
O
 
15
] · 6H
 
2
O
14.8.7Monteregianite-(Y)
(Na,K)
 
6
(Y,Ca)
 
2
Si
 
16
O
 
38
· 10H
 
2
O
14.8.8Iraqite-(La)
K(Ca,Na)
 
2
(La,Ce,Th)[(Si,Al)
 
8
O
 
20
]
14.8.9Ashcroftine-(Y)
K
 
5
Na
 
5
(Y,Ca)
 
12
Si
 
28
O
 
70
(OH)
 
2
(CO
 
3
)
 
8
· 8H
 
2
O
14.8.10Nordite-(La)
(La,Ce)(Sr,Ca)Na
 
2
(Na,Mn)(Zn,Mg)Si
 
6
O
 
17
14.8.11Nordite-(Ce)
(Ce,La)(Sr,Ca)Na
 
2
(Na,Mn)(Zn,Mg)Si
 
6
O
 
17
14.8.12Jervisite
(Na,Ca,Fe
2+
 
)(Sc,Mg,Fe
2+
 
)Si
 
2
O
 
6
14.8.13Cerite-(Ce)
(Ce,Ca)
 
9
(Mg,Fe)(SiO
 
4
)
 
3
(HSiO
 
4
)
 
4
(OH)
 
3
14.8.14Cascandite
Ca(Sc,Fe
3+
 
)(HSi
 
3
O
 
9
)

Other Names for Thalénite-(Y)

Other Languages:
German:Thalenit-(Y)
Russian:Таленит-(Y)

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 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; note: this is actually the structure of fluorthalenite]

Internet Links for Thalénite-(Y)

Search Engines:
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  • External Links:
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  • Look for Thalénite-(Y) on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Thalenite-(Y) details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
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  • Fabre Minerals - search for Thalénite-(Y) specimens
  • Localities for Thalénite-(Y)

    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.
    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 pluton
          • "Rotten granite" quarries
    www.uwrf.edu/~wc01
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