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Ambohimasina Commune, Betafo District, Vakinankaratra Region, Antananarivo Province, Madagascar

Xenotime-(Y)
Ambohimasina Commune, Betafo District, Vakinankaratra Region, Antananarivo Province, Madagascar

Photo: Arliguie M
Kaominina Ambohimasina, Distrikan' i Betafo, Faritra Vakinankaratra, Faritanin' Antananarivo, Madagasikara

A number of pegmatites prospected for beryl and U-minerals are found in the Ambohimasina Commune in the south and in the Faratsiho Commune in the North along the border of the Vavavato granite massif some 40 km NW of the town Antsirabe in the main higland of Madagascar.

These pegmatites as a group has been refered to by Besaire (1966) as "Le groupe d'Ambohimasina". Among these are the Ampangabe (the locality from which the now descredited "Ampangabeite" , synonym of Samarskite=(Y) was described from), Sahamandrevo, Lohavalala and Ambatovoahangy pegmatites.

Nice amethysts among others are also known from this commune.

Mineral List

Mineral list contains entries from the region specified including sub-localities
Beryl
'Columbite-Tantalite'
Euxenite-(Y)
'Fergusonite'
Ilmenite
'Pyrochlore Supergroup
var: Betafite (of Hogarth 1977)'

Quartz
var: Amethyst

Samarskite-(Y)
Thorite
var: Orangite

Vermiculite
Xenotime-(Y)
Zircon
Zircon
var: Malacon



18 entries listed. 7 valid minerals.

Localities in this Region

Madagascar

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References

- Behier, J. (1963): Carte minéralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
- Besairie, H. (1966): Les Gites Minéraux de Madagascar. Annales Géologiques de Madagascar, Tananarive, 34, 92p

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