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Autor:
Fadimatou Ngounouno Yamgouot, Ismaïla Ngounouno, Mama Ntoumbe, Claudial Amane Lagmet, Abdou Aziz Youpougam
Publikováno v:
Open Journal of Geology. :883-895
Metaluminous (P.I. > 1) rhyolite from Hadjer el Hamis consisted of quartz, alkali feldspar, clinopyroxene (hedenbergite), amphibole (F-arfvedsonite) and oxides-hydroxides (ilmenite, magnetite, limonite) phenocrysts is characterized by the negative Eu