Alkaline Rocks and Carbonatites of the World

Funded by HiTech AlkCarb - New geomodels to explore deeper for Hi-Tech critical raw materials in Alkaline rocks and Carbonatites

Kongwe

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Occurrence number: 
103-00-013
Country: 
Malawi
Region: 
The North Nyasa Alkaline Province
Location: 
Longitude: 33.92, Latitude: -13.58

Kongwe is an oval ring structure of about 6x4 km the central core of which consists of gneisses with porphyroblasts of microcline perthite, granular sodic plagioclase, aegirine-augite, biotite, garnet, a little quartz and, in some rocks, amphibole.

References: 
BLOOMFIELD, K. 1965b. A reconnaissance survey of alkaline rocks in the northern and central regions. Records, Geological Survey of Malawi, 5: 17-63.
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith