(Marirana, Sahatany, Faritra Vakinankaratra, Faritany Antananarivo, Madagasikara)
Granite pegmatite. The name Marirana covers a group of 3 complex type LCT pegmatites worked mostly for gem polychromatic tourmalines.
(Marirana Nord, Marirana Centre and Marirana South).
Ref:
Ranorosoa N (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulose
