(Mahabé-Sud, Kaominina Andriamena, Departementa Tsaratanana, Faritra Betsiboka, Faritany Mahajanga, Madagasikara)
A NYF-pegmatite situated about 27 km east of the small town Andriamena.
Ref:
- J.Behier: Carte mineralogique de Madagascar. Archive Serv. Geol.Mad. A 1871.
- F.Pezzotta (1999): Madagaskar. Das Paradies der Mineralien und Edelsteine. ExtraLapis nr 17 (in german) p.44