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Buer, Bjørkedalen, Porsgrunn, Telemark, Norway

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(Buer, Bjørkedalen, Porsgrunn, Telemark, Norge)

Syenite pegmatite material found on dumps from construction of a watertunnel. The pegamtite dike was hosted in basalt



References:
- Segalstad, T. V. & Larsen, A. O. (1978): Chevkinite and perrierite from the Oslo region, Norway. American Mineralogist 63, 499-505

- Larsen, A. O. (1988): Helvite group minerals from syenite pegmatites in the Oslo Region, Norway. Contribution to the mineralogy of Norway no 68. Norsk Geologisk Tidsskrift 68: 119-124 [with analysis of helvite from Buer]

- Engvoldsen, T., Andersen, F., Berge, S. A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1), 15-71

- Andersen, F., Berge, S. A. & Burvald, I. (1996): Die Mineralien des Langesundsfjords und des umgebenden Larvikit-Gebietes, Oslo-Region, Norwegen. Mineralien-Welt 7(4), 21-100





Mineral List:
  		•  Aegirine
    NaFe
    3+
     
    		[Si
     
    2
    		O
     
    6
    		]
    Reference: [Segalstad, T.V. & Larsen, A.O.(1978): Chevkinite and perrierite from the Oslo region, Norway. American Mineralogist 63,499-505]
  		•  Aegirine-augite
    (Na,Ca)(Fe
    3+
     
    		,Fe
    2+
     
    		,Mg,Al)Si
     
    2
    		O
     
    6
    Reference: [Larsen, A. O & Raade, G.(1997): Pyroksener fra Oslofeltets syenittpegmatitter. Bergverksmuseets Skrift 12,16-17]
  		•  Albite
    Na[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71]
  		•  Allanite-(Ce)
    {CaCe}{Al
     
    2
    		Fe
    2+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: []
  		•  Amesite
    Mg
     
    2
    		Al[(OH)
     
    4
    		|AlSiO
     
    5
    		]
    Reference: [Andersen, F., Berge, S.A. & Burvald, I. (1996): Die Mineralien des Langesundsfjords und des umgebenden Larvikit-Gebietes, Oslo-Region, Norwegen. Mineralien-Welt 7(4), 21-100]
  		•  Ancylite-(Ce)
    SrCe[OH|(CO
     
    3
    		)
     
    2
    		] · H
     
    2
    		O
    Reference: [Andersen, F.,Berge, S.A. & Burvald, I. (1996): Die Mineralien des Langesundsfjords und des umgebenden Larvikit-Gebietes, Oslo-Region, Norwegen. MineralienWelt 7(4):21-100]
  		•  Andradite
    Ca
     
    3
    		Fe
    3+
    2
    		[SiO
     
    4
    		]
     
    3
    Reference: [Andersen, F., Berge, S.A. & Burvald, I. (1996): Die Mineralien des Langesundsfjords und des umgebenden Larvikit-Gebietes, Oslo-Region, Norwegen. Mineralien-Welt 7(4), 21-100]
  		•  Azurite
    Cu
     
    3
    		[OH|CO
     
    3
    		]
     
    2
    Reference: []
  		•  Bavenite
    Ca
     
    4
    		Be
     
    2
    		Al
     
    2
    		Si
     
    9
    		O
     
    26
    		(OH)
     
    2
    Reference: [Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71]
  		•  Bornite
    Cu
     
    5
    		FeS
     
    4
    Reference: [Andersen, F., Berge, S.A. & Burvald, I. (1996): Die Mineralien des Langesundsfjords und des umgebenden Larvikit-Gebietes, Oslo-Region, Norwegen. Mineralien-Welt 7(4), 21-100]
  		•  Calcite
    CaCO
     
    3
    Reference: [Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71]
  		•  Celadonite
    K(Mg,Fe
    2+
     
    		)(Fe
    3+
     
    		,Al)[(OH)
     
    2
    		|Si
     
    4
    		O
     
    10
    		]
    Reference: [Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71]
  		•  Chalcocite
    Cu
     
    2
    		S
    Reference: []
  		•  Chalcopyrite
    CuFeS
     
    2
    Reference: []
  		•  Chamosite
    (Fe
    2+
     
    		,Mg)
     
    5
    		Al[(OH)
     
    8
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71]
  		•  Chevkinite-(Ce)
    (Ce,La,Ca,Th)
     
    4
    		(Fe
    2+
     
    		,Mg)(Fe
    2+
     
    		,Ti,Fe
    3+
     
    		)
     
    2
    		(Ti,Fe
    3+
     
    		)
     
    2
    		[O
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
     
    2
    Description: small crystals up to 3mm long
    Reference: [Segalstad, T.V. & Larsen, A.O.(1978): Chevkinite and perrierite from the Oslo region, Norway. American Mineralogist 63,499-505]
    Site Photo
    Buer, Bjørkedalen, Porsgrunn, Telemark, Norway
    © Knut Eldjarn
  		•  Covellite
    CuS
    Reference: []
  		•  Datolite
    CaB[OH|SiO
     
    4
    		]
    Reference: [Andersen, F., Berge, S.A. & Burvald, I. (1996): Die Mineralien des Langesundsfjords und des umgebenden Larvikit-Gebietes, Oslo-Region, Norwegen. Mineralien-Welt 7(4), 21-100]
  		•  Epidote
    {Ca
     
    2
    		}{Al
     
    2
    		Fe
    3+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71]
  		•  Fergusonite-(Y)
    YNbO
     
    4
    Reference: [Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71]
  		•  Gadolinite-(Ce) (TL)
    (Ce,La,Nd,Y)
     
    2
    		Fe
    2+
     
    		Be
     
    2
    		[O|SiO
     
    4
    		]
     
    2
    Type Locality: Buer, Bjørkedalen, Porsgrunn, Telemark, Norway
    Reference: [Amer.Min.(1978) 63, 188-195; Clark, 1993, 249 - "Hey's Mineral Index - 3rd Edition"]
    Site Photo
    Buer, Bjørkedalen, Porsgrunn, Telemark, Norway
    © Knut Eldjarn
  		•  Grossular
    Ca
     
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Reference: []
  		•  Helvite
    Mn
    2+
    4
    		Be
     
    3
    		[S|(SiO
     
    4
    		)
     
    3
    		]
    Habit: tetrahedra up to 2mm
    Colour: greenish yellow
    Reference: [Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71]
  		•  Loparite-(Ce)
    (Na,Ce,Ca,Sr,Th)(Ti,Nb,Fe)O
     
    3
    Description: Good crystals have been found, and sometimes loparite-(Ce) occure in the core of perrierite, together with pyrophanite.
    Reference: [Segelstad & Larsen (1978, p. 189); Neumann (1985, pp. 66 and 67).]
  		•  Malachite
    Cu
     
    2
    		[(OH)
     
    2
    		|CO
     
    3
    		]
    Reference: []
  		•  Microcline
    K[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Segalstad, T.V. & Larsen, A.O.(1978): Chevkinite and perrierite from the Oslo region, Norway. American Mineralogist 63,499-505]
  		•  Perrierite-(La)
    (La,Ce, Ca)
     
    4
    		(Fe,Mn
    2+
     
    		,Mg)(Ti,Fe)
     
    4
    		[O
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
     
    2
    Reference: [Segalstad, T.V. & Larsen, A.O. (1978): Chevkinite and perrierite from the Oslo region, Norway. American Mineralogist, 63, 499-505. ]
  		•  Pyrochlore
    (Ca,Na)
     
    2
    		Nb
     
    2
    		O
     
    6
    		(OH,F)
    Reference: [Segalstad, T.V. & Larsen, A.O.(1978): Chevkinite and perrierite from the Oslo region, Norway. American Mineralogist 63,499-505]
  		•  Pyrophanite
    Mn
    2+
     
    		TiO
     
    3
    Reference: [Segelstad & Larsen (1978, p. 189); Neumann (1985, p. 66).]
  		•  Sérandite
    Na(Mn
    2+
     
    		,Ca)
     
    2
    		[HSi
     
    3
    		O
     
    9
    		]
    Reference: [Andersen, F.,Berge, S.A. & Burvald, I. (1996): Die Mineralien des Langesundsfjords und des umgebenden Larvikit-Gebietes, Oslo-Region, Norwegen. MineralienWelt 7(4):21-100]
  		•  Thorite
    (Th,U)[SiO
     
    4
    		]
    Reference: [Andersen, F.,Berge, S.A. & Burvald, I. (1996): Die Mineralien des Langesundsfjords und des umgebenden Larvikit-Gebietes, Oslo-Region, Norwegen. MineralienWelt 7(4):21-100]
  		•  Titanite
    CaTi[O|SiO
     
    4
    		]
    Reference: [Engvoldsen,T.,Andersen, F.,Berge, S.A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18(1),15-71]
  		•  Tobermorite
    Ca
     
    5
    		Si
     
    6
    		(O,OH)
     
    18
    		·5H
     
    2
    		O
    Reference: [Andersen, F.,Berge, S.A. & Burvald, I. (1996): Die Mineralien des Langesundsfjords und des umgebenden Larvikit-Gebietes, Oslo-Region, Norwegen. MineralienWelt 7(4):21-100 ]
    Site Photo
    Buer, Bjørkedalen, Porsgrunn, Telemark, Norway
    © OT. Ljostad 2005
  		•  Vesuvianite
    Ca
     
    10
    		(Mg,Fe)
     
    2
    		Al
     
    4
    		Si
     
    9
    		O
     
    34
    		(OH)
     
    4
    Reference: []
  		•  Zircon
    Zr[SiO
     
    4
    		]
    Reference: [Segalstad, T.V. & Larsen, A.O.(1978): Chevkinite and perrierite from the Oslo region, Norway. American Mineralogist 63,499-505]


    35 entries listed. 34 valid minerals. 1 type locality (valid mineral).

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