stripes
Occurrence number:
116-00-002
Country:
Namibia
Location:
Longitude: 13.77, Latitude: -17.32
Carbonatite:
No
A wide zone of north-northwest-trending alkaline dykes traverses the Zebra Mountains northwest of Swartbooisdrif (No. 116-00-003). One dyke has a length of 35 km. They consist of syenite with calcite, biotite and what Menge (1986) refers to as "biotite-albite fenite" or carbonatite. These dykes are probably related to the Lupongola complex a short distance to the north in Angola (Angola No. 005-00-035).
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.
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: