Abstract
This research projetc aims to study the xenocryst/antecryst compositional influence in basic to ultrabasic alkaline magmas. This question is specially important in the study of lamprophyres (mesocratic to melanocratic porphyritic rocks), of mafic-ultramafic cumulate bodies and of kimberlitic/kamafugitic pipes related to the Cretaceous alkaline magmatism in the Brazilian Platform. All thes…