Ankaramite

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.

Ankaramite

Igneous rock
Composition
Mafic:pyroxene, olivine and plagioclase.

Its type locality is Ankaramy in Madagascar. It was first described in 1916.^[1] It is also found in the Sierra de Guanajuato of Central Mexico,^[1] the South Pacific on islands such as Tahiti, Rarotonga, Samoa and in the Zealandia, Alexandra Volcanic Group.^[2]