Alkaline Rocks and Carbonatites of the World

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Jarawa

stripes

Occurrence number: 
122-00-030
Country: 
Nigeria
Location: 
Longitude: 9.17, Latitude: 9.88

This intrusion, like Kwandonkaya (No. 122-00-028) to the north, contains no truly alkaline rocks. It consists of an early hornblende-biotite granite and later biotite granite and biotite microgranite. The chemistry of these rocks is described by Imeokparia (1985b).

References: 
BUCHANAN, M.S., MACLEOD, W.N., TURNER, D.C., BERRIDGE, N.G. and BLACK, R. 1971. The geology of the Jos Plateau. Volume 2, Younger granite complexes. Bulletin, Geological Survey of Nigeria, 32: 1-159.IMEOKPARIA, E.G. 1985b. Geochemical evolution of the Jarawa Younger Granite complex and its related mineralization, northern Nigeria. Geological Magazine, 122: 163-73.
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