stripes
Occurrence number:
005-00-019
Country:
Angola
Location:
Longitude: 18.3, Latitude: -12.7
Carbonatite:
No
This occurrence, information on the form of which has not been found, consists of a nepheline syenite containing what is described as primary calcite (Sousa, 1921). The rock comprises alkali feldspar, forming vermicular intergrowths, nepheline, apatite, biotite, muscovite, magnetite and green spinel (Sousa, 1920). A rock analysis is given by Sousa (1921).
References:
SOUSA, M.P. de 1920. Contribution a l'étude lithologique de l'intérieur de l'Angola. Comptes Rendus Hebdomadaires des Séances de l'Académie des Sciences, Paris, 170: 238-40.SOUSA, M.P. de 1921. Sur quelques roches remarquables de l'Angola. Comptes Rendus Hebdomadaires des Séances de l'Académie des Sciences, Paris, 173: 777-80.
Location: