Ambatofotsy pegmatite, Mahavelona Commune, Soavinandriana Department, Itasy Region, Antananarivo Province, Madagascar

(Ambatofotsy, Departementa Soavinandriana, Faritra Itasy, Faritany Antananarivo, Madagasikara)

A granite LCT pegmatite, subtype Beryll-Columbite-Uranium that is famous for producing very large Betafites. One of the largest crystal group weighted 104 kg!
It is located 22 km WSW of the town Soavinandriana in the central highland of Madagascar.

References:
Lacroix, A. (1922): Mineralogie de Madagascar, I, pp. 379-381.
Besaire, H. (1966): Gites mineraux de Madagascar. Ann.Geol.Mad. XXXIV

Detailed

By Chemistry

Mineral Photos (6)

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Mineral List:

	Aeschynite-(Y)

	Albite

	var: Oligoclase

	Anatase

	Beryl

	Betafite

	Biotite

	Bismuthinite

	Bismutite

	Fergusonite-(Y)

	Microcline

	'Perthite'

	Quartz

	var: Amethyst

	Rutile

	Thorite

	var: Orangite

	Titanite

	Vermiculite

	Zircon

20 entries listed. 15 valid minerals.

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