Alkaline Rocks and Carbonatites of the World

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Oban Hills (Ikpai)

stripes

Occurrence number: 
122-00-050
Country: 
Nigeria
Location: 
Longitude: 8.85, Latitude: 5.53

An intrusion close to the southeastern Nigerian border is briefly described by Raeburn (1927). The rocks are syenites, sometimes with a little quartz, containing a green, sodic pyroxene, a little biotite and a deep blue-green to yellow amphibole that may be sodic.

References: 
RAEBURN, C. 1927. Tinstone in the Calabar District. Bulletin, Geological Survey of Nigeria, 11: 72-88.
Location: 
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith