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Antanetinilapa (Estatoby), Sahatany Valley, Sahatany Pegmatite Field (Mt Ibity area), Vakinankaratra Region, Antananarivo Province, Madagascar

Photo: K.E.Larsen
Latitude: 20°3'26"S
Longitude: 46°57'16"E
Antanetinilapa pegmatite/quarry is situated on a small hill behind the village Antanetinilapa east of Mt.Ilapa, south of a small affluent to the Sahatany river on the western side of the Sahatany river in the NE part of the Sahatany Valley. The local population calls the very quarry today "Estatoby" , but the name known in literature is Antanetinilapa. (Malagasy place names often changes)
Minerals, especially bityite (found here at the end of 1980s), are often mislabeled as coming from the Ilapa quarry. This is an entire other locality nearby, but totally different from Antanetinilapa. So far bityite has not been reported from Ilapa. Some recent literature also wrongly spells the name of this locality as "Antanety ny Ilapa" probably cause to a misunderstanding of the malagasy language.

Rakotoarison (1964) locality nr 15.

Mineral List

Albite
Allanite-(Ce)
Amesite
'Apatite'
Axinite-(Mn)
Beryl
Bityite
Chevkinite-(Ce)
Columbite-(Fe)
'Columbite-(Mn)-Tantalite-(Mn) series'
Danburite
Elbaite
Lepidolite
Microcline
Microcline
var: Amazonite

'Monazite'
Phenakite
'Pyrochlore Supergroup'
Quartz
Schorl
Spessartine
Spodumene
'Tourmaline'
'Uranpyrochlore (of Hogarth 1977)'
Zoisite


25 entries listed. 17 valid minerals. 1 erroneous literature entry.

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References

- Rakotoarison, W. (1964): Les pegmatites de la Sahatany. Archive du Service Géologique Madagascar. A. 1983, 1-39.

- Lefevre & Thomas (1998): Les pegmatites de la vallée de la Sahatany, Madagascar. La Règne Minéral, nr 19, 15-28

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