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Larvikite outcrops, Dammen, Lake Mykle, Kongsberg, Buskerud, Norway

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Larvikite (monzonitic rock) outcrops.
Several outcrops in the area of Dammen in the southern and western parts of Lake Mykle, in the Southwestern part of the Oslo rift.

Refs.:
NGU Bulletin, 442, 2004, pp. 23-28.
Andersen, T. & Sørensen, H. (1993): Crystallization and metasomatism of nepheline syenite xenolites in quartz-bearing intrusive rocks in the permian Oslo rift, SE Norway. Norsk Geologisk Tidsskrift, 73, # 4, pp. 250-266.





Mineral List:
  		•  Aegirine
    NaFe
    3+
     
    		[Si
     
    2
    		O
     
    6
    		]
    Reference: [Andersen, T. & Sørensen, H. (1993): Crystallization and metasomatism of nepheline syenite xenolites in quartz-bearing intrusive rocks in the permian Oslo rift, SE Norway. Norsk Geologisk Tidsskrift, 73, # 4, pp. 250-266.]
  		•  Albite
    var: Andesine
    (Na,Ca)[Al(Si,Al)Si
     
    2
    		O
     
    8
    		]
    Reference: [NGU Bulletin, 442, 2004, pp. 23-28.]
  		•  Albite
    var: Oligoclase
    (Na,Ca)[Al(Si,Al)Si
     
    2
    		O
     
    8
    		]
    Reference: [NGU Bulletin, 442, 2004, pp. 23-28.]
  		•  Allanite-(Ce)
    {CaCe}{Al
     
    2
    		Fe
    2+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [NGU Bulletin, 442, 2004, pp. 23-28.]
  		•  Analcime
    Na
     
    2
    		[Al
     
    2
    		Si
     
    4
    		O
     
    12
    		] · 2H
     
    2
    		O
    Reference: [Andersen, T. & Sørensen, H. (1993): Crystallization and metasomatism of nepheline syenite xenolites in quartz-bearing intrusive rocks in the permian Oslo rift, SE Norway. Norsk Geologisk Tidsskrift, 73, # 4, pp. 250-266.]
  		•  Andradite
    Ca
     
    3
    		Fe
    3+
    2
    		[SiO
     
    4
    		]
     
    3
    Reference: [Andersen, T. & Sørensen, H. (1993): Crystallization and metasomatism of nepheline syenite xenolites in quartz-bearing intrusive rocks in the permian Oslo rift, SE Norway. Norsk Geologisk Tidsskrift, 73, # 4, pp. 250-266.]
  		•  Andradite
    var: Hydroandradite
    Ca
     
    3
    		Fe
    3+
    2
    		(SiO
     
    4
    		)
     
    3-x
    		(OH)
     
    4x
    Reference: [Andersen, T. & Sørensen, H. (1993): Crystallization and metasomatism of nepheline syenite xenolites in quartz-bearing intrusive rocks in the permian Oslo rift, SE Norway. Norsk Geologisk Tidsskrift, 73, # 4, pp. 250-266.]
  		•  Anorthoclase
    (Na,K)[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [NGU Bulletin, 442, 2004, pp. 23-28.]
  		•  Apatite-(CaF)
    Ca
     
    5
    		[F|(PO
     
    4
    		)
     
    3
    		]
    Reference: [Andersen, T. & Sørensen, H. (1993): Crystallization and metasomatism of nepheline syenite xenolites in quartz-bearing intrusive rocks in the permian Oslo rift, SE Norway. Norsk Geologisk Tidsskrift, 73, # 4, pp. 250-266.]
  		•  Augite
    (Ca,Na)(Mg,Fe
    2+
     
    		,Al,Fe
    3+
     
    		,Ti)[(Si,Al)
     
    2
    		O
     
    6
    		]
    Reference: [NGU Bulletin, 442, 2004, pp. 23-28.]
  		•  Biotite
    Description: The mica in the nepheline syenite have a composition intermediate between phlogopite and siderophyllite.
    Reference: [Andersen, T. & Sørensen, H. (1993): Crystallization and metasomatism of nepheline syenite xenolites in quartz-bearing intrusive rocks in the permian Oslo rift, SE Norway. Norsk Geologisk Tidsskrift, 73, # 4, pp. 250-266.]
  		•  Calcite
    CaCO
     
    3
    Reference: [Andersen, T. & Sørensen, H. (1993): Crystallization and metasomatism of nepheline syenite xenolites in quartz-bearing intrusive rocks in the permian Oslo rift, SE Norway. Norsk Geologisk Tidsskrift, 73, # 4, pp. 250-266.]
  		•  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
    Reference: [NGU Bulletin, 442, 2004, pp. 23-28.]
  		•  Edenite
    Na[Ca
     
    2
    		][Mg
     
    5
    		][(OH)
     
    2
    		|AlSi
     
    7
    		O
     
    22
    		]
    Reference: [NGU Bulletin, 442, 2004, pp. 23-28.]
  		•  Epidote
    {Ca
     
    2
    		}{Al
     
    2
    		Fe
    3+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [Andersen, T. & Sørensen, H. (1993): Crystallization and metasomatism of nepheline syenite xenolites in quartz-bearing intrusive rocks in the permian Oslo rift, SE Norway. Norsk Geologisk Tidsskrift, 73, # 4, pp. 250-266.]
  		•  Fluorite
    CaF
     
    2
    Reference: [NGU Bulletin, 442, 2004, pp. 23-28.]
  		•  Gonnardite
    Na
     
    2
    		Ca[Al
     
    2
    		Si
     
    3
    		O
     
    10
    		]
     
    2
    		 · 7H
     
    2
    		O
    Reference: [Andersen, T. & Sørensen, H. (1993): Crystallization and metasomatism of nepheline syenite xenolites in quartz-bearing intrusive rocks in the permian Oslo rift, SE Norway. Norsk Geologisk Tidsskrift, 73, # 4, pp. 250-266.]
  		•  Hematite
    Fe
     
    2
    		O
     
    3
    Reference: [Andersen, T. & Sørensen, H. (1993): Crystallization and metasomatism of nepheline syenite xenolites in quartz-bearing intrusive rocks in the permian Oslo rift, SE Norway. Norsk Geologisk Tidsskrift, 73, # 4, pp. 250-266.]
  		•  Ilmenite
    Fe
    2+
     
    		TiO
     
    3
    Reference: [NGU Bulletin, 442, 2004, pp. 23-28.]
  		•  'K Feldspar'
    Reference: [NGU Bulletin, 442, 2004, pp. 23-28.]
  		•  Magnesiohastingsite
    Na[Ca
     
    2
    		][Mg
     
    4
    		Fe
    3+
     
    		][(OH)
     
    2
    		|Al
     
    2
    		Si
     
    6
    		O
     
    22
    		]
    Reference: [Andersen, T. & Sørensen, H. (1993): Crystallization and metasomatism of nepheline syenite xenolites in quartz-bearing intrusive rocks in the permian Oslo rift, SE Norway. Norsk Geologisk Tidsskrift, 73, # 4, pp. 250-266.]
  		•  Magnetite
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
    Reference: [Andersen, T. & Sørensen, H. (1993): Crystallization and metasomatism of nepheline syenite xenolites in quartz-bearing intrusive rocks in the permian Oslo rift, SE Norway. Norsk Geologisk Tidsskrift, 73, # 4, pp. 250-266.]
  		•  Nepheline
    (Na,K)[AlSiO
     
    4
    		]
    Reference: [Andersen, T. & Sørensen, H. (1993): Crystallization and metasomatism of nepheline syenite xenolites in quartz-bearing intrusive rocks in the permian Oslo rift, SE Norway. Norsk Geologisk Tidsskrift, 73, # 4, pp. 250-266.]
  		•  'Orthopyroxene Subgroup'
    Reference: [NGU Bulletin, 442, 2004, pp. 23-28.]
  		•  'Perthite'
    Reference: [NGU Bulletin, 442, 2004, pp. 23-28.]
  		•  Pigeonite
    (Mg,Fe
    2+
     
    		,Ca)(Mg,Fe
    2+
     
    		)[Si
     
    2
    		O
     
    6
    		]
    Reference: [NGU Bulletin, 442, 2004, pp. 23-28.]
  		•  Quartz
    SiO
     
    2
    Reference: [NGU Bulletin, 442, 2004, pp. 23-28.]
  		•  Rutile
    TiO
     
    2
    Reference: [Andersen, T. & Sørensen, H. (1993): Crystallization and metasomatism of nepheline syenite xenolites in quartz-bearing intrusive rocks in the permian Oslo rift, SE Norway. Norsk Geologisk Tidsskrift, 73, # 4, pp. 250-266.]
  		•  Sodalite
    Na
     
    8
    		[Cl
     
    2
    		|Al
     
    6
    		Si
     
    6
    		O
     
    24
    		]
    Reference: [Andersen, T. & Sørensen, H. (1993): Crystallization and metasomatism of nepheline syenite xenolites in quartz-bearing intrusive rocks in the permian Oslo rift, SE Norway. Norsk Geologisk Tidsskrift, 73, # 4, pp. 250-266.]
  		•  'Thomsonite'
    Reference: [Andersen, T. & Sørensen, H. (1993): Crystallization and metasomatism of nepheline syenite xenolites in quartz-bearing intrusive rocks in the permian Oslo rift, SE Norway. Norsk Geologisk Tidsskrift, 73, # 4, pp. 250-266.]
  		•  Titanite
    CaTi[O|SiO
     
    4
    		]
    Reference: [Andersen, T. & Sørensen, H. (1993): Crystallization and metasomatism of nepheline syenite xenolites in quartz-bearing intrusive rocks in the permian Oslo rift, SE Norway. Norsk Geologisk Tidsskrift, 73, # 4, pp. 250-266.]
  		•  Zircon
    Zr[SiO
     
    4
    		]
    Reference: [NGU Bulletin, 442, 2004, pp. 23-28.]


    32 entries listed. 24 valid minerals.

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