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Tveit, Iveland, Aust-Agder, Norway

StandardDetailedBy ChemistryMineral Photos (18)Site Photos (3)Search GoogleMineral Report for Region

The Farm Tveit is located in the southern part of Iveland. In the early 1930s there were at last 6 different pegmatites worked as feldspar quarries all belonging to the land of the Tveit Farm. These are respectively described, following Bjørlykke (1937), as Tveit 1, 2, 3, 4, 5 and 6.




Mineral list contains entries from the region specified including sub-localities


Mineral List:
  		•  'Albite-Anorthite Series'
    Description: a small amount of the pegmatite consisted of plagioclase
    Reference: [Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311 ]
  		•  'Allanite'
    Reference: [Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311]
  		•  Almandine
    Fe
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Colour: Dark red
    Reference: [Larsen, A.O.(1980):" Granater fra granittpegmatitter".NAGS-nytt 7(4),31-32 (in norwegian)]
    Site Photo
    Tveit 3 Feldspar Quarry (Steli; Steeli), Tveit, Iveland, Aust-Agder, Norway
    © Olav Revheim
  		•  'Almandine-Spessartine Series'
    Reference: [Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311]
    Site Photo
    Tveit 3 Feldspar Quarry (Steli; Steeli), Tveit, Iveland, Aust-Agder, Norway
    © Olav Revheim
  		•  Bertrandite
    Be
     
    4
    		[(OH)
     
    2
    		|Si
     
    2
    		O
     
    7
    		]
    Habit: Small crystals in dark masses of pseudmorphs after beryl
    Colour: white translucent
    Description: Vogt (1911) describes bertrandite from Tveit. Bjørlykke (1937) says that the locality is probably Tveit 3
    Reference: [Bjørlykke, H.( 1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311 ]
    Site Photo
    Tveit 3 Feldspar Quarry (Steli; Steeli), Tveit, Iveland, Aust-Agder, Norway
    © Olav Revheim
  		•  Beryl
    Be
     
    3
    		Al
     
    2
    		Si
     
    6
    		O
     
    18
    Habit: elongated crystals up to 1 m long and with a diameter of 15 cm
    Reference: [Bjørlykke, H.( 1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311 ]
    Site Photo
    Tveit 3 Feldspar Quarry (Steli; Steeli), Tveit, Iveland, Aust-Agder, Norway
    © Olav Revheim
  		•  Biotite
    Habit: large thin flakes
    Reference: [Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311 ]
  		•  Bismuthinite
    Bi
     
    2
    		S
     
    3
    Reference: [Frigstad, O.F. (1968): En undersøkelse av cleavelandittsonerte pegmatittganger i Iveland-Evje, Nedre Setesdal. Hovedfagsoppgave (Thesis), University of Oslo; Neumann (1985) : Norges mineraler. Norges geologiske undersøkelse Skrifter 68, p. 33]
  		•  'Chlorite Group'
    Description: as alteration of biotite
    Reference: [Bjørlykke, H.( 1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311 ]
  		•  Columbite
    (Fe,Mn)(Nb,Ta)
     
    2
    		O
     
    6
    Reference: [Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, p. 271; Neumann (1985) : Norges mineraler. Norges geologiske undersøkelse Skrifter 68, p. 77).]
  		•  Columbite-(Fe)
    FeNb
     
    2
    		O
     
    6
    Description: crystals up to 10 cm in length with a weight of 2-3 kg are reported
    Reference: [Selbekk, S.R.; Berg, H-J.; Folvik, H. & Ellingsen, H.V. (2008): Mineraler i columbitt-tantalittgruppen fra Norge. Bergverksmuseet Skrift nr 38, 33-36]
    Site Photo
    Tveit 3 Feldspar Quarry (Steli; Steeli), Tveit, Iveland, Aust-Agder, Norway
    © Olav Revheim
  		•  Euxenite-(Y)
    (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)
     
    2
    		O
     
    6
    Reference: [Frigstad, O. F. (1999): Amazonittpegmatitter i Iveland-Evje. Bergverksmuseets Skrift 15: 60-73]
  		•  'Fergusonite'
    Habit: well developed crystals
    Description: Found in microcline close to biotite
    Reference: [Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311 ]
  		•  Magnetite
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
    Reference: [Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311 ]
  		•  Microcline
    K[AlSi
     
    3
    		O
     
    8
    		]
    Colour: greyish
    Reference: [Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311 ]
  		•  'Monazite'
    Reference: [Bjørlykke, H.( 1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311 ]
  		•  Monazite-(Ce)
    (Ce,La,Nd,Th)PO
     
    4
    Description: Analyzed monazite-(Ce) is rich in Sm, and shows higher values of Sm than in orther norwegian monzaites (Selbekk, R. S. et al 2009)
    Reference: [Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311 ; Selbekk, R. S. et al. (2009): Mineraler i monazitt-gruppen funnet i Norge. Norsk Bergverksmuseum Skrift 41: 43-47]
    Site Photo
    Tveit 3 Feldspar Quarry (Steli; Steeli), Tveit, Iveland, Aust-Agder, Norway
    © Olav Revheim
  		•  Muscovite
    KAl
     
    2
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311 ]
  		•  Phenakite
    Be
     
    2
    		[SiO
     
    4
    		]
    Description: Vogt describe phenakite from a pegmatite at Tveit, occuring in pseudomorphoses after beryl together with bertrandite.
    Reference: [Vogt (1911b, pp. 6-7); Neumann (1985) : Norges mineraler. Norges geologiske undersøkelse Skrifter 68, p. 127).]
  		•  Pyrite
    FeS
     
    2
    Reference: [Nordrum, F. S. (2007): Nyfunn av mineraler i Norge 2006-2007. STEIN 34 (2), 14-26]
  		•  Quartz
    SiO
     
    2
    Reference: [Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311 ]
  		•  Rutile
    var: Ilmenorutile
    Fe
     
    x
    		(Nb,Ta)
     
    2x
    		·4Ti
     
    1-x
    		O
     
    2
    Description: Bjørlykke (1934) reports the find of one single xl
    Reference: [Schetelig, J. (1913): Mineralogische Studien, I. Norsk Geologisk Tidsskrift 2: 3-37.[ p.11]; Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311 ]
  		•  Samarskite-(Y)
    (Y,Fe
    3+
     
    		,Fe
    2+
     
    		,U,Th,Ca)
     
    2
    		(Nb,Ta)
     
    2
    		O
     
    8
    Habit: as irregular masses up to 15 cm in diameter
    Reference: [Bjørlykke, H.( 1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311 ]
  		•  Uraninite
    var: Cleveite
    Description: "as small irregular splashes up to 1 cm between xenotime crystals" (Bjørlykke (1934)
    Reference: [Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311]
  		•  Xenotime-(Y)
    YPO
     
    4
    Habit: well developed crystals
    Description: Found in microcline & quartz close to biotite
    Reference: [Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311 ]
  		•  Zircon
    var: Alvite
    Habit: Radiated crystal aggregates
    Reference: [Bjørlykke, H. (1934): The Mineral Paragenesis and Classification of the Granite Pegmatites of Iveland, Setesdal, Southern Norway. Norsk Geologisk Tidsskrift 14, 211-311 ]


    26 entries listed. 15 valid minerals.

    Localities in this Region:
    Norway
     
    • Aust-Agder
      • Iveland
        • Tveit

    The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database!
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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: 28th Nov 2009 07:24:23