Ankaramite is volcanic rock type of mafic composition. It is a dark porphyritic variety of basanite containing abundant pyroxene and olivine phenocrysts. 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.
References
Ankaramite Wikipedia(Text) CC BY-SA