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Vohidahy, Sahatany Valley, Sahatany Pegmatite Field (Mt Bity (Ibity) area), Vakinankaratra Region (Betafo - Antsirabé region), Antananarivo Province, Madagascar

The name Vohidahy covers 6 different LCT pegmatites close to Mount Vohidahy, which at last 3 of them has been worked for polychromatic tourmalines and beryl. The largest and most important is situated in a ravine SE of Mount Vohiday. A second pegmatite is found on the eastern flanc of Mt.Vohidahy, 50 m SW of the first locality. The third is situated in a ravine on the western flanc of Mt.Vohidahy, about 350 m NW of the first one. The 3 other pegmatites is found about 400 m N of the first one.



References:
- Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. 624p

- Rakotoarison, W. (1964): Les pegmatites de la Sahatany. Archive du Service Géologique Madagascar. A. 1983, 39p

- Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulouse





Mineral List:
Apatite-(CaF)
var: Mn-bearing Apatite-(CaF)

Beryl
Columbite-(Mn)
Elbaite
Goethite
Hematite
Ixiolite
Lepidolite
Microcline
var: Amazonite

Microlite
Muscovite
Opal
'Psilomelane'
Schorl
Spessartine
'Tourmaline'
'var: Rubellite'
Zircon


18 entries listed. 12 valid minerals.

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