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Otrøy (Otrøya; Otterøy), Midsund, More og Romsdal, Norway

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(Otrøy, Midsund kommune, Møre og Romsdal fylke, Norge)

Orogenic banded harzburgites and dunites, from the deep (> 200 km, > 6 GPa) upper mantle (convection and diapirs systems).
The peridotites are preserved as layers or boudinages lenses within high-grade crustal gneisses of the Western Gneiss Region.



References:
Katayama,I., Karato, S-i., and Brandon, M. (2005): Evidence of high water content in the deep upper mantle inferred from deformation microstructures. Geology 33: 613-616




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


Mineral List:
  		•  Chromite
    FeCr
     
    2
    		O
     
    4
    Reference: [Hysingjord, J. (1967): Edel granat fra Otterøy ved Molde. Norges Geologiske Undersøkelse 255 (Årbok 1967): 5-9]
  		•  'Clinopyroxene Subgroup'
    Reference: [Geology, July 2005, V. 33, N° 7, pp. 613-616.]
  		•  Diopside
    var: Chromian Diopside
    (Ca,Cr)MgSi
     
    2
    		O
     
    6
    Reference: [Geology, July 2005, V. 33, N° 7, pp. 613-616.]
  		•  Enstatite
    Mg
     
    2
    		[SiO
     
    3
    		]
     
    2
    Reference: [Hysingjord, J. (1967): Edel granat fra Otterøy ved Molde. Norges Geologiske Undersøkelse 255 (Årbok 1967): 5-9]
  		•  Forsterite
    Mg
     
    2
    		[SiO
     
    4
    		]
    Reference: [Geology, July 2005, V. 33, N° 7, pp. 613-616.]
  		•  'Hornblende'
    Reference: [Hysingjord, J. (1967): Edel granat fra Otterøy ved Molde. Norges Geologiske Undersøkelse 255 (Årbok 1967): 5-9]
  		•  Ilmenite
    Fe
    2+
     
    		TiO
     
    3
    Description: Exsolutions in olivine neoblasts.
    Reference: [Geology, July 2005, V. 33, N° 7, pp. 613-616.]
  		•  'Olivine'
    (Mg,Fe
    2+
     
    		)
     
    2
    		[SiO
     
    4
    		]
    Reference: [Hysingjord, J. (1967): Edel granat fra Otterøy ved Molde. Norges Geologiske Undersøkelse 255 (Årbok 1967): 5-9]
  		•  'Orthopyroxene Subgroup'
    Description: Exsolutions in garnet.
    Reference: [Geology, July 2005, V. 33, N° 7, pp. 613-616.]
  		•  Pyrope
    Mg
     
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Colour: Violette in daylight; winered in artificial light
    Description: A Cr and V bearing pyrope. Hysingjord (1967)
    Reference: [Hysingjord, J. (1967): Edel granat fra Otterøy ved Molde. Norges Geologiske Undersøkelse 255 (Årbok 1967): 5-9]
  		•  Rutile
    TiO
     
    2
    Description: Exsolutions in garnet.
    Reference: [Geology, July 2005, V. 33, N° 7, pp. 613-616.]
  		•  'Serpentine Group'
    D
     
    2
    		[Si
     
    2
    		O
     
    5
    		](OH)4 + or - nH
     
    2
    		O
    Reference: [Hysingjord, J. (1967): Edel granat fra Otterøy ved Molde. Norges Geologiske Undersøkelse 255 (Årbok 1967): 5-9]


    12 entries listed. 6 valid minerals.

    Localities in this Region:
    Norway
     
    • More og Romsdal
      • Midsund
        • Otrøy (Otrøya; Otterøy)

    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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