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Orthoclase from
Diamond Rocks, Mourne Mountains, Co. Down, Ulster, Northern Ireland, UK

Classification
Species:Orthoclase
Formula:K(AlSi3O8)
Comments:This locality may or may not have disordered potash feldspar. Has this specimen been tested by methods such as Wright and Stewart? Historical orthoclase has been increasingly shown to be microcline.
Confirmation
Validity:Believed Valid
References
References:Dr Richard Unitt (Personal Observation); Proceedings of Irish Societies The Irish NaturalistVol. 1, No. 5 (Aug., 1892), pp. 100-102; Proceedings of Irish Societies The Irish Naturalist Vol. 1, No. 5 (Aug., 1892), pp. 100-102
Associated Minerals Based on Photo Data:
Smoky Quartz5 photos of Orthoclase associated with Smoky Quartz at this locality.
Mica Group3 photos of Orthoclase associated with Mica Group at this locality.
Topaz3 photos of Orthoclase associated with Topaz at this locality.
Albite2 photos of Orthoclase associated with Albite at this locality.
Muscovite2 photos of Orthoclase associated with Muscovite at this locality.
Beryl1 photo of Orthoclase associated with Beryl at this locality.
Data
Mineral Data:Click here to view Orthoclase data
Locality Data:Click here to view Diamond Rocks, Mourne Mountains, Co. Down, Ulster, Northern Ireland, UK
Nearest other occurrences of Orthoclase
4.3km (2.7 miles) Lindsay's Leap, Newcastle, Mourne Mountains, Co. Down, Ulster, Northern Ireland, UK
8.6km (5.4 miles) Pigeon Rock Mountain, Mourne Mountains, Co. Down, Ulster, Northern Ireland, UK
 
Mineral and/or Locality  
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