Sakalava, Kaominina Ianapera, Distrikan' i Benenitra, Faritra Atsimo Andrefana, Faritanin'i Toliary, Madagasikara
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 occurs in reaction zones developed at a shear zone within lenses of serpentinites and amphibolites belonging to the Vohibory group.
References
- Marchand, P.(1995): Situation géologique des émeraudes de Ianapera, province de Tuléar (Madagascar. Revue de Gemmologie AFG. 124:13–16
- 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.
- 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.; Salvi, S.; Béziat, D.; Rakotondrazafy, M. and Giuliani, G. (2009): Proximal and distal styles of pegmatite-related metasomatic emerald mineralization at Ianapera, southern Madagascar. Mineralium Deposita, 44 : 817-835
Mineral List
16 entries listed. 9 valid minerals.
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