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Igneous rock
Mafic:pyroxene, olivine and plagioclase.

Ankaramite is volcanic rock type of mafic composition. It is a dark porphyritic variety of basanite containing abundant pyroxene and olivine phenocrysts.[1] It contains minor amounts of plagioclase and accessory biotite, apatite, and iron oxides.

Its type locality is Ankaramy in Madagascar. It was first described in 1916.[1]


  1. ^ a b Luis Enrique Ortiz Hernández, An Arc Ankaramite Occurrence in Central Mexico, Revista Mexicana de Ciencias Geológicas, volumen 17, número 1 2000, p. 34-44