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Varuträsk, Skellefteå, Västerbotten, Sweden

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(Varuträsk, Skellefteå, Västerbotten, Sverige)

Pegmatite of the LCT (Lithium-Caesium-Tantalum) type, quarried since 1938.



References:
- Mineralogical Magazine: 43: 227.
- Mineralogical Magazine: 48: 443.
- Geologiska Föreningens I Stockholm Förhandlingar(GFF), Stockholm (1937): 59: 95.
- Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 670, 851.
- Quensel, P. (1957) The Paragenesis of the Varuräsk Pegmatite, in Arkiv för Mineralogi och Geologi (AMG; no 2: 1-2) Stockholm.

- http://www.geology.neab.net/locality/varutras.htm





 Map Reference: 64°48'3"N , 20°44'28"E

This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.



Mineral List:
  		•  Albite
    Na[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Specimens photographed in mindat]
  		•  'Allemontite'
    Reference: [No reference listed]
  		•  Alluaudite (TL)
    (Na,Ca)Mn
    2+
     
    		(Fe
    3+
     
    		,Mn
    2+
     
    		,Fe
    2+
     
    		,Mg)
     
    2
    		(PO
     
    4
    		)
     
    3
    Type Locality: Varuträsk, Skellefteå, Västerbotten, Sweden
    Reference: [Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 675.]
  		•  Almandine
    Fe
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Reference: []
  		•  Amblygonite
    LiAl[(F,OH)|PO
     
    4
    		]
    Reference: [No reference listed]
  		•  Antimony
    Sb
    Reference: [Mineralogical Magazine 1963 33 : 458-466]
  		•  Apatite-(CaF)
    var: Mn-bearing Apatite-(CaF)
    (Ca,Mn
    2+
     
    		)
     
    5
    		(PO
     
    4
    		)
     
    3
    		(F,Cl,OH) or Ca
     
    5
    		([P,Mn
    3+
     
    		]O
     
    4
    		)
     
    3
    		(F,Cl,OH)
    Reference: [www.geology.neab.net/minerals/manganap.htm]
    Site Photo
    Varuträsk, Skellefteå, Västerbotten, Sweden
    © Jorge M. Alves
  		•  Apatite-(CaOH)
    Ca
     
    5
    		[OH|(PO
     
    4
    		)
     
    3
    		]
    Reference: [No reference listed]
  		•  Arsenic
    As
    Reference: [No reference listed]
  		•  Beryl
    Be
     
    3
    		Al
     
    2
    		Si
     
    6
    		O
     
    18
    Reference: [No reference listed]
    Site Photo
    Varuträsk, Skellefteå, Västerbotten, Sweden
    © AÖ
  		•  Bismuth
    Bi
    Reference: [No reference listed]
  		•  Cassiterite
    SnO
     
    2
    Reference: [Cerny et al. (2004) Can. Min. 89, 505-518]
    Site Photo
    Varuträsk, Skellefteå, Västerbotten, Sweden
    © Jorge M. Alves
  		•  Columbite
    (Fe,Mn)(Nb,Ta)
     
    2
    		O
     
    6
    Habit: platy
    Description: mainly manganocolumbite composition
    Reference: [Cerny et al. (2004) Can. Min. 89, 505-518]
  		•  Cookeite
    LiAl
     
    4
    		(Si
     
    3
    		Al)O
     
    10
    		(OH)
     
    8
    Reference: [No reference listed]
  		•  Dickite
    Al
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Reference: [No reference listed]
  		•  Elbaite
    [Na][(Li,Al)
     
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Reference: [No reference listed]
    Site Photo
    Varuträsk, Skellefteå, Västerbotten, Sweden
    © Jorge M. Alves
  		•  Eosphorite
    (Mn
    2+
     
    		,Fe
    2+
     
    		)Al[(OH)
     
    2
    		|PO
     
    4
    		] · H
     
    2
    		O
    Reference: [No reference listed]
  		•  Fairfieldite
    Ca
     
    2
    		(Mn
    2+
     
    		,Fe
    2+
     
    		)[PO
     
    4
    		]
     
    2
    		 · 2H
     
    2
    		O
    Reference: []
  		•  Ferrisicklerite
    (Fe
    3+
     
    		,LiMn
    2+
     
    		)[PO
     
    4
    		]
    Reference: [Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 673.]
  		•  Hagendorfite
    NaCaMn
    2+
     
    		Fe
    2+
    2
    		(PO
     
    4
    		)
     
    3
    Reference: [No reference listed]
  		•  Halloysite
    Al
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Reference: [No reference listed]
  		•  Herzenbergite
    (Sn,Pb)SnS
     
    2
    Description: microscopic grains in cassiterite, nearly pure SnS
    Reference: [Cerny et al. (2004) Can. Min. 89, 505-518]
  		•  Heterosite
    (Fe
    3+
     
    		,Mn
    3+
     
    		)[PO
     
    4
    		]
    Reference: [Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 676.]
    Site Photo
    Varuträsk, Skellefteå, Västerbotten, Sweden
    © Alan Goldstein
  		•  Hingganite-(Y)
    (Y,REE,Ca)
     
    2
    		(□,Fe
    2+
     
    		)Be
     
    2
    		[SiO
     
    4
    		]
     
    2
    		(OH)
     
    2
    Reference: [Nysten,P. & Gustafsson, L.(2006): I jakt på sällsynta mineral. Geologiskt forum nr 49, 22-25]
  		•  Ixiolite
    (Ta,Nb,Sn,Fe,Mn)
     
    4
    		O
     
    8
    Reference: [No reference listed]
    Site Photo
    Varuträsk, Skellefteå, Västerbotten, Sweden
    © DV Minerals
  		•  Kaolinite
    Al
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Reference: [No reference listed]
  		•  Kasolite
    Pb(UO
     
    2
    		)[SiO
     
    4
    		] · H
     
    2
    		O
    Reference: [No reference listed]
  		•  Lepidolite
    Reference: [No reference listed]
    Site Photo
    Varuträsk, Skellefteå, Västerbotten, Sweden
    © Jorge M. Alves
  		•  Lithiophilite
    LiMn
    2+
     
    		[PO
     
    4
    		]
    Reference: [Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 667.]
    Site Photo
    Varuträsk, Skellefteå, Västerbotten, Sweden
    © Jorge M. Alves
  		•  Löllingite
    FeAs
     
    2
    Reference: [No reference listed]
    Site Photo
    Varuträsk, Skellefteå, Västerbotten, Sweden
    © Alan Goldstein
  		•  Meta-autunite
    Ca(UO
     
    2
    		)
     
    2
    		[PO
     
    4
    		]
     
    2
    		· 6-8H
     
    2
    		O
    Reference: [No reference listed]
  		•  Microlite
    (Ca,Na)
     
    2
    		Ta
     
    2
    		O
     
    6
    		(O,OH,F)
    Description: subhedral crystals up to 20 mm. chemistry appr. (Ca,Na)2(Ta,Nb)2O6(OH,F). Also as metasomatic product, replacing columbite-tantalite. Metasomatic microlite has A-site deficiencies and low F in contrast to primary microlite.
    Reference: [Cerny et al. (2004) Can. Min. 89, 505-518; Mineralogical Magazine 1963 33 : 458-466]
  		•  Montebrasite
    LiAl[(OH,F)|PO
     
    4
    		]
    Reference: [Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 826.]
    Site Photo
    Varuträsk, Skellefteå, Västerbotten, Sweden
    © AÖ
  		•  Montmorillonite
    (Na,Ca)
     
    0.33
    		(Al,Mg)
     
    2
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    		·nH
     
    2
    		O
    Reference: [www.geonord.org/varutrask/varutrask99.htm.]
    Site Photo
    Varuträsk, Skellefteå, Västerbotten, Sweden
    © Jorge M. Alves
  		•  Muscovite
    KAl
     
    2
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Specimens photographed in mindat]
    Site Photo
    Varuträsk, Skellefteå, Västerbotten, Sweden
    © Jorge M. Alves
  		•  Nacrite
    Al
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Reference: [No reference listed]
  		•  Paragonite
    NaAl
     
    2
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: []
  		•  Petalite
    LiAlSi
     
    4
    		O
     
    10
    Reference: [No reference listed]
    Site Photo
    Varuträsk, Skellefteå, Västerbotten, Sweden
    © Martins da Pedra
  		•  Pollucite
    (Cs,Na)
     
    2
    		[Al
     
    2
    		Si
     
    4
    		O
     
    12
    		] · 2H
     
    2
    		O
    Reference: [No reference listed]
    Site Photo
    Varuträsk, Skellefteå, Västerbotten, Sweden
    © Jorge M. Alves
  		•  Polylithionite ?
    KLi
     
    2
    		Al[(F,OH)
     
    2
    		|Si
     
    4
    		O
     
    10
    		]
    Reference: [No reference listed]
    Site Photo
    Varuträsk, Skellefteå, Västerbotten, Sweden
    © 2008 Jesse Crawford
  		•  Purpurite
    (Mn
    3+
     
    		,Fe
    3+
     
    		)[PO
     
    4
    		]
    Reference: [No reference listed]
    Site Photo
    Varuträsk, Skellefteå, Västerbotten, Sweden
    © B. Otter
  		•  Pyrochlore
    (Ca,Na)
     
    2
    		Nb
     
    2
    		O
     
    6
    		(OH,F)
    Description: metasomatic pyrochlore replaces columbite, typically with A-site deficiencies and low F.
    Reference: [Cerny et al. (2004) Can. Min. 89, 505-518]
  		•  Romanèchite
    (Ba,H
     
    2
    		O)
     
    2
    		Mn
     
    5
    		O
     
    10
    Reference: [No reference listed]
  		•  Sénarmontite
    Sb
     
    2
    		O
     
    3
    Reference: [No reference listed]
  		•  Sicklerite
    (LiMn
    2+
     
    		,Fe
    3+
     
    		)[PO
     
    4
    		]
    Reference: [Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 673.]
  		•  Spodumene
    LiAl[Si
     
    2
    		O
     
    6
    		]
    Reference: [No reference listed]
  		•  Stannomicrolite
    (Sn,Fe,Mn)
     
    2
    		(Ta,Nb,Sn)
     
    2
    		(O,OH)
     
    7
    Reference: [No reference listed]
  		•  Stibarsen (TL)
    AsSb
    Type Locality: Varuträsk, Skellefteå, Västerbotten, Sweden
    Reference: [Am Min 59 (1974), 1331]
  		•  Stibiconite
    Sb
    3+
     
    		Sb
    5+
    2
    		O
     
    6
    		(OH)
    Reference: [No reference listed]
  		•  Stibiomicrolite (TL)
    (Sb,Ca,Na)
     
    2
    		(Ta,Nb)
     
    2
    		O
     
    7
    Type Locality: Varuträsk, Skellefteå, Västerbotten, Sweden
    Description: replaces stibiotantalite along fractures filled with native Sb.
    Reference: [GFF (1938) 60, 216; Groat et al. (1987) GFF 109; Cerny et al. (2004) Can. Min. 89, 505-518]
  		•  Stibiotantalite
    Sb(Ta,Nb)O
     
    4
    Reference: [Cerny et al. (2004) Can. Min. 89, 505-518; Mineralogical Magazine 1963 33 : 458-466]
    Site Photo
    Varuträsk, Skellefteå, Västerbotten, Sweden
    © Pavel M. Kartashov
  		•  Stibnite
    Sb
     
    2
    		S
     
    3
    Reference: [Nysten,P. & Gustafsson, L.(2006): I jakt på sällsynta mineral. Geologiskt forum nr 49, 22-25]
  		•  Tantalite-(Mn)
    MnTa
     
    2
    		O
     
    6
    Description: Fractionation trend observed at locality is manganoan ferrocolumbite-manganocolumbite-niobian manganotantalite. manganotantalite 1 in Quensel does not conform to the general trend described by Cerny et al. as it has very low Nb and intermediate Mn/Fe
    Reference: [Quensel 1941, GFF 63, 176-179; Cerny et al. (2004) Can. Min. 89, 505-518]
  		•  Tapiolite-(Fe)
    (Fe,Mn)(Ta,Nb)
     
    2
    		O
     
    6
    Description: rare microscopic grains - 25 microns - in cassiterite
    Reference: [Cerny et al. (2004) Can. Min. 89, 505-518]
  		•  Topaz
    Al
     
    2
    		[(F,OH)
     
    2
    		|SiO
     
    4
    		]
    Reference: [No reference listed]
  		•  'Tourmaline
    var: Indicolite'
    Reference: [No reference listed]
  		•  'Tourmaline
    var: Rubellite'
    Reference: [No reference listed]
    Site Photo
    Varuträsk, Skellefteå, Västerbotten, Sweden
    © C.Thomson 2004
  		•  'Tourmaline
    var: Verdelite'
    Reference: [No reference listed]
    Site Photo
    Varuträsk, Skellefteå, Västerbotten, Sweden
    © 2005 M. Kampf
  		•  Triphylite
    LiFe
    2+
     
    		[PO
     
    4
    		]
    Reference: [Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 667.]
    Site Photo
    Varuträsk, Skellefteå, Västerbotten, Sweden
    © AÖ
  		•  Triplite
    (Mn
    2+
     
    		,Fe
    2+
     
    		)
     
    2
    		[(F,OH)|PO
     
    4
    		]
    Description: Rare.
    Reference: [Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 851.]
  		•  Uraninite
    UO
     
    2
    Reference: [No reference listed]
  		•  Uraninite
    var: Pitchblende
    UO
     
    2
    Reference: [www.geonord.org/varutrask/varutrask99.htm.]
  		•  Uranophane
    Ca(UO
     
    2
    		)
     
    2
    		[HSiO
     
    4
    		]
     
    2
    		 · 5H
     
    2
    		O
    Reference: [No reference listed]
  		•  Varulite (TL)
    NaCaMn
    2+
     
    		Mn
    2+
    2
    		(PO
     
    4
    		)
     
    3
    Type Locality: Varuträsk, Skellefteå, Västerbotten, Sweden
    Reference: [Geologiska Föeningens I Stockholm. Förhandlinger, Stockholm (1937): 59: 95; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 670.]
    Site Photo
    Varuträsk, Skellefteå, Västerbotten, Sweden
    © 2008, J. Weissman
  		•  Vivianite
    Fe
    2+
    3
    		(PO
     
    4
    		)
     
    2
    		·8H
     
    2
    		O
    Reference: [No reference listed]
  		•  Wodginite
    Mn(Sn,Ta)Ta
     
    2
    		O
     
    8
    Description: microscopic anhedral inclusions in cassiterite
    Reference: [Cerny et al. (2004) Can. Min. 89, 505-518]
  		•  Zircon
    Zr[SiO
     
    4
    		]
    Reference: [Nysten,P. & Gustafsson, L.(2006): I jakt på sällsynta mineral. Geologiskt forum nr 49, 22-25]


    67 entries listed. 58 valid minerals. 4 type localities (valid minerals).

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