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

StandardDetailedBy ChemistrySearch GoogleMineral Report for Region

(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

Group 4 - Oxides and Hydroxides
  		• Chromite4.BB.05
    FeCr
     
    2
    		O
     
    4
  		• Ilmenite4.CB.05
    Fe
    2+
     
    		TiO
     
    3
  		• Rutile4.DB.05
    TiO
     
    2
    Group 9 - Silicates
  		• Diopside
    var: Chromian Diopside    		9.DA.15
    (Ca,Cr)MgSi
     
    2
    		O
     
    6
  		• Enstatite9.DA.05
    Mg
     
    2
    		[SiO
     
    3
    		]
     
    2
  		• Forsterite9.AC.05
    Mg
     
    2
    		[SiO
     
    4
    		]
  		• Pyrope9.AD.25
    Mg
     
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Unclassified Minerals
  		• 'Clinopyroxene Subgroup'-
  		• 'Hornblende'-
  		• 'Olivine'-
    (Mg,Fe
    2+
     
    		)
     
    2
    		[SiO
     
    4
    		]
  		• 'Orthopyroxene Subgroup'-
  		• 'Serpentine Group'-
    D
     
    2
    		[Si
     
    2
    		O
     
    5
    		](OH)4 + or - nH
     
    2
    		O


    12 entries listed. 7 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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    Mineral and/or Locality
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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: 29th Nov 2009 02:13:33