Alkaline Rocks and Carbonatites of the World

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Imori (Zigarawa-Imori Hills)


Occurrence number: 
Longitude: 8.4, Latitude: 10.47

This occurrence is little known, a photographic interpretation on the 1:250 000 geological map (Turner, 1979) indicating an approximately circular 3 km diameter intrusion, while Raeburn et al. (1927, 1:125,000 sheet) indicate an intrusion somewhat elongated east-west. In the latter publication brief reference is made to riebeckite granite, rhyolite dykes and gabbro.

RAEBURN, C., BAIN, A.D.N. and RUSS, W. 1927. The tinfields of Zaria and Kano Provinces. Bulletin, Geological Survey of Nigeria, 11: 1-71.TURNER, D.C. 1979. Nigeria: the northern ring complexes. Geological map, scale 1:250,000. St Andrews University Younger Granite Research Group.
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