Alkaline Rocks and Carbonatites of the World

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Dombe Grande

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Occurrence number: 
005-00-022
Country: 
Angola
Location: 
Longitude: 13.08, Latitude: -12.95

A rock from the area of Dombe Grande, described by Andrade (1957) as a 'basanitoid', comprises serpentized phenocrysts of augite, labradorite and olivine with nepheline and analcime; an analysis is given. Lapido-Loureiro (1967) refers to aegirine-augite and barkevikite also in this rock.

References: 
ANDRADE, M.M. de 1957. Rochas vulcânicas da orla mesocenozóica entre Benguela e Moçâmedes. Garcia de Orta. Revista da Junta de Investigações do Ultramar, 5: 739-68.LAPIDO-LOUREIRO, F.E. 1967. Consideracoes sobre o quimismo dos sienitos nefelínicos. Breves referências a rochas alcalinas de Angola e ao seu interesse económico. Boletim do Instituto de Investigação Científica de Angola, 4: 37-65.
Location: 
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith