(Ambondrona, Department Betafo, Faritra Vakinankaratra, Faritany Antananarivo, Madagasikara)
A pegmatite located between the small towns of Andrembesoa and Alarobia-Bemaha, about 40 km south of Betafo in the central high land of Madagascar.
Ref:
J.Behier (1963): Carte mineralogique de Madagascar. Archive Serv. Geol.Mad. A 1871