A beryl and phosphate bearing pegmatite worked for beryl and columbite-tantalite, located at the Marivolanitra Hill close to the river Manambazaha, 10 km N of Ampandramaika. Over 100 kgs large masses of triplite with many other phospates was found here
Beside the main pegmatite, about 12 other pegmatites has been found in the area nearby.
References
- Behier, J.(1957): Les mineraux phospates de la pegmatite de Marivolanitra, Madagascar. in Commision de Coopération Technique en Afrique au Sud du Sahara (C.C.T.A.). Geologie. Comités regionaux Centre, Est et Sud. Conférence de Tananarive Avril 1957. I, 237-242
- Behier, J. (1960): Contribution á la Minéralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive. 78 p
- Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
- Besairie, H. (1966): Les Gites Minéraux de Madagascar. Annales Géologiques de Madagascar, Tananarive, 34, p 62
Mineral List
30 entries listed. 26 valid minerals.
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