Alkaline Rocks and Carbonatites of the World

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Occurrence number: 
Burkina Faso
Longitude: -1.33, Latitude: 12.82

The Sadba granite, 2 km southeast of Nakoalba, is oval in plan and 7x5 km; it cuts migmatites, granites and schists. The rock consists of perthite, quartz, riebeckite and in some facies euhedral aegirine; accessories are titanite, zircon, calcite, magnetite, fluorite and in some rocks biotite, while in two specimens a white mica was found by Ducellier (1963) who identified it as lepidolite. An analysis is available.

DUCELLIER, J. 1963. Contribution a l'étude des formations cristallines et métamorphiques du centre et du nord de la Haute-Volta. Mémoires du Bureau de Recherches Géologiques et Minières, Paris, 10: 1-320.
Fig. 3_22 Yabo, Sadba, Ouin and Zoungou. Other post-tectonic, non-alkaline granites are also shown (after Ducellier, 1963, Carte Ouagadougou Sud).
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