Ianapera emerald deposit (Sakalava), Ianapera (Janapera) area, Benenitra District, Southwestern Region, Tuléar (Toliara) Province, Madagascar

An emerald deposit, situated about 350 km east of the town Toliara (Tulear) in the southern part of Madagascar. The deposit was discovered in 1989.
The emerald oocurs in reaction zones developed at a shear zone within lenses of serpentinites and amphibolites.

References:
- Vapnik, Y.e.; Sabot, B.; Moroz, I: Fluid Inclusions in Ianapera Emerald, Southern Madagascar in International Geology Review, Volume 47, Number 6, July 2005, pp. 647-662(16).
- Cheilletz A., Sabot B., Marchand P., De Donato P., Taylor B., Archibald D., Barres O. Emerald Deposits in Madagascar: Two Differents Types for one Mineralising Event. // EUG XI 2001. Abstracts with program. P. 547. see: http://www.the-conference.com/JConfAbs/6/OS06.pdf.
- Groat, L.A., Giuliani, G., Marshall, D.D., and Turner, D. (2008): Emerald deposits and occurrences: A review. Ore Geology Reviews 34, 87-112.
- Andrianjakavah, P. R. et al. (2009): Mineralium Deposita 44, 817-835.