Tsaramanga (Tongafeni; Itongafeno), Kaominina Mahaiza, Distrikan' i Betafo, Faritra Vakinankaratra, Faritanin' Antananarivo, Madagasikara
The Tsaramanga or the “Tongafeno” granite pegmatite is hosted in coarse grained gabbro stock ("Gabbro de l’ Itsindro”, intrusive complex of Ambatofinandrahana). It can be classified after Pezzotta (1999) as a LCT beryl columbite subtype pegmatite.
Known for blue beryl (Santamaria-type), rose quartz and good crystals of columbites.
X = 439,935
Y = 684,606
15OO m NW of Itongafeno Mt, near the old village of Tsaramanga
Mineral List
29 entries listed. 16 valid minerals.
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References
- Lacroix, A. (1912): Sur un groupe de niobotantalates cubiques, radioactifs, des pegmatites du Vakinankaratra . Bulletin de la Société française de Minéralogie, Paris 35 , 85-92 [on "blomstrandite" = betafite]
- Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871.
- Pezzotta, F. (1999): Madagaskar. Das Paradies der Mineralien und Edelsteine. Extra Lapis nr 17, pp 53-54 (german edition)
- Rakotoarisoa Nivomalala (2003): Contribution á l' etude monographique des gites pegmatitiques de la region de Betafo-Antsirabe. Interpretation structurale d' images Landsat. Ecole Supérieure Polytechnique d'Antananarivo 2003
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