Alkaline Rocks and Carbonatites of the World

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Pande (Mba Nsche, Donkou)


Occurrence number: 
Longitude: 11.43, Latitude: 6.37

Mont Pande, situated 8 km southwest of Mayo Darle (No. 19), is a small hill comprising intrusive granites together with flows of peralkaline rhyolite. The granites contain riebeckite, aegirine and aenigmatite. The rhyolite is a pantellerite and, as described by Koch (1955a), contains rare phenocrysts of alkali feldspar, quartz and sodic amphibole in a trachytic matrix of feldspar, aegirine, riebeckite and rare aenigmatite. Some facies of the rock contain spherultic structures of quartz and riebeckite. Koch (1955a) gives rock analyses of aegirine- and riebeckite-rich types.

KOCH, P. 1953. Notice explicative sur la feuille Banyo. Carte Geologique de Reconnaissance à l'échelle du 1/500,000. (E41) Territoire Cameroun. Paris.KOCH, P. 1955a. Les pantéllerites du Mont Mba Nsché (Cameroun). Comptes Rendus Hebdomadaires des Séances de l'Académie des Sciences. Paris, 241: 893-5.
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