stripes
Occurrence number:
054-00-062
Country:
Ethiopia
Location:
Longitude: 39.87, Latitude: 5.45
Carbonatite:
No
Near Karsa two isolated outcrops of lava occur that consist of large sodic feldspar phenocrysts and rather fewer of aegirine in a matrix of alkali feldspar, aegirine, amphibole and nepheline.
References:
LACROIX, A. 1930. Les roches hyperalcalines du massif du Fantalé et du Col de Balla (Abyssinie). Mémoires de la Société Géologique de France. Paris, Tome VI. 14: 89-102.MOHR, P.A. 1962a (reprinted 1971). The geology of Ethiopia. University College of Addis Ababa Press, Addis Ababa. 268 pp.
Location: