Alkaline Rocks and Carbonatites of the World

Setup during HiTech AlkCarb: an online database of alkaline rock and carbonatite occurrences

Yabo

stripes

Occurrence number: 
027-00-001
Country: 
Burkina Faso
Location: 
Longitude: -1.47, Latitude: 12.92
Carbonatite: 
No

Several kilometres south of Yabo an area of about 13x8 km is underlain by syntectonic aegirine-augite-bearing gneiss. The rock consists of equal amounts of microcline and albite, abundant quartz and aegirine-augite. A modal and chemical analysis will be found in Ducellier (1963).

References: 

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.

Map: 
Fig. 3_22 Yabo, Sadba, Ouin and Zoungou. Other post-tectonic, non-alkaline granites are also shown (after Ducellier, 1963, Carte Ouagadougou Sud).
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith