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St Kilda, Outer Hebrides, Scotland, UK

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Island group west of Outer Hebrides; Tertiary Intrusive complex. Permission for access must be obtained from the Nature Conservancy and the National Trust for Scotland before visiting the islands.





Mineral List:
  		•  'Allanite'
    Reference: [Harding R.R., Merriman R.J. and Nancarrow P.H.A. 1982. Mineralogical Magazine vol 46]
  		•  Anatase
    TiO
     
    2
    Habit: tabular
    Colour: dark green
    Reference: [St Kilda: an Illustrated Account of the Geology. Harding R.R., Merriman R.J. & Nancarrow P.H.A. 1984 (British Geological Survey Report Vol 16, No 7)]
  		•  'Chabazite'
    Reference: [St Kilda: an Illustrated Account of the Geology. Harding R.R., Merriman R.J. & Nancarrow P.H.A. 1984 (British Geological Survey Report Vol 16, No 7)]
  		•  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
    Habit: prismatic to acicular, up to 0.2mm
    Colour: Red-brown (pleochroic) in thin section; appears black and near-opaque in hand specimens
    Description: First British occurnece for this species. Mostly observed in thin sections. Can be seen with x10 loupe in hand specimens, but easily mistaken for amphibole or edge-views of dark mica (although the latter is almost absent in most of the chevkinite-bearing rocks of St Kilda).
    Reference: [Harding R.R., Merriman R.J. and Nancarrow P.H.A. 1982: Mineralogical Magazine vol 46]
    Site Photo
    St Kilda, Outer Hebrides, Scotland, UK
     
  		•  Epidote
    {Ca
     
    2
    		}{Al
     
    2
    		Fe
    3+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [St Kilda: an Illustrated Account of the Geology. Harding R.R., Merriman R.J. & Nancarrow P.H.A. 1984 (British Geological Survey Report Vol 16, No 7)]
  		•  Magnetite
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
    Habit: octaheda & massive (rock-forming)
    Colour: black
    Description: Magnetite is abundant as a rock-forming component in the basic rocks of St Kilda, and is also common as sharply euhedral lustrous octahedra in vugs in the Conachair Granite.
    Reference: [St Kilda: an Illustrated Account of the Geology. Harding R.R., Merriman R.J. & Nancarrow P.H.A. 1984 (British Geological Survey Report Vol 16, No 7)]
  		•  Orthoclase
    K[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [St Kilda: an Illustrated Account of the Geology. Harding R.R., Merriman R.J. & Nancarrow P.H.A. 1984 (British Geological Survey Report Vol 16, No 7)]
  		•  Prehnite
    Ca
     
    2
    		Al
     
    2
    		Si
     
    3
    		O
     
    12
    		(OH)
    Reference: [Harding R.R., Merriman R.J. and Nancarrow P.H.A. 1984. St Kilda: an illustrated account of the geology. Rep. British Geological Survey, vol. 16 no 7]
  		•  Scolecite
    Ca[Al
     
    2
    		Si
     
    3
    		O
     
    10
    		] · 3H
     
    2
    		O
    Reference: [St Kilda: an Illustrated Account of the Geology. Harding R.R., Merriman R.J. & Nancarrow P.H.A. 1984 (British Geological Survey Report Vol 16, No 7)]
  		•  Zircon
    Zr[SiO
     
    4
    		]
    Reference: [St Kilda: an Illustrated Account of the Geology. Harding R.R., Merriman R.J. & Nancarrow P.H.A. 1984 (British Geological Survey Report Vol 16, No 7)]
  		•  Zirkelite
    (Ti,Ca,Zr)O
     
    2-x
    Reference: [Harding R.R., Merriman R.J. and Nancarrow P.H.A. 1982. Mineralogical Magazine vol 46]


    11 entries listed. 9 valid minerals.

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