| and olivine nephelinites (“ankaratrites”) in Madagascar Leone Melluso a,⁎, Anton P. le Roex b, Vincenzo...melilitite Olivine nephelinite Alaotra Takarindoha Vatomandry Madagascar a b s t r a c t The Cenozoic...of the Alaotra, Takarindoha–Vatomandry and Votovorona (NE Ankaratra) volcanic fields, Madagascar, range...clinopyroxene, nepheline, leucite, Ba-phlogopite, perovskite, ilmenite, spinels, apatite), and evidence of...Ni concentrations) are found in each volcanic district, and a few lavas contain mantle xenoliths or xenocrysts |
