stripes
Occurrence number:
116-00-001
Country:
Namibia
Location:
Longitude: 13.77, Latitude: -17.3
Carbonatite:
Yes
This intrusion of nepheline syenite has a diameter of about 1 km with a dyke-like extension to the southeast. There is a nearly vertical layering defined by alternating coarser and finer grained layers. The nepheline syenite contains biotite and in the southwestern part sodalite and cancrinite. There are a few thin veins of carbonatite in the central area of the intrusion.
References:
MENGE, G.F.W. 1986. Sodalite carbonatite deposits of Swartbooisdrif, South West Africa/Namibia. In C.R. Anhaeusser and S. Maske (eds), Mineral deposits of southern Africa, 1: 2261-8. Geological Society of South Africa, Johannesburg.VERWOERD, W.J. 1967. The carbonatites of South Africa and South West Africa. Handbook, Geological Survey of South Africa, 6: 1-452.
Map:
Fig. 3_191 A. The Kakumangua, Zebra Mountains dykes, Swartbooisdrif and Epembe occurrences (after Menge, 1986, Fig. 1). Inset. More detailed map of the Epembe intrusion (after Ferguson et al., 1975A, Fig. 1).
Location: