Alkaline Rocks and Carbonatites of the World

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

Henga Valley

stripes

Occurrence number: 
103-00-004
Country: 
Malawi
Region: 
The North Nyasa Alkaline Province
Location: 
Longitude: 33.93, Latitude: -10.9
Carbonatite: 
No

This is a small intrusion of syenite and sodalite-nepheline syenite of 1.6x0.6 km on the north side of Thandala Hill and near the southern edge of the Nyika Plateau (Thatcher, 1974). Petrographically it is the same as the rock comprising Telelele Hill (No. 103-00-005).

References: 

THATCHER, E.C. 1974. The geology of the Nyika area. Bulletin, Geological Survey of Malawi, 40: 1-90.

Map: 
Fig. 3_146 Henga, Telelele and Njakwa (after Thatcher, 1974, 1:100,000 map Nyika S).
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith