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Samiresy, Tritriva Commune, Betafo District, Vakinankaratra Region, Antananarivo Province, Madagascar

Photo: K.E.Larsen
Samiresy, Kaominina Tritriva, Distrikan' i Betafo, Faritra Vakinankaratra, Faritanin' Antananarivo, Madagasikara

The locality Samiresy covers a number of pegmatite dikes (classified as potassic pegmatites after A. Lacroix 1922) worked for minerals containing U, beryl and rose quartz.

It is located SW of Tritriva and about 20 km SW of the town Antsirabe in the main highland of Madagascar.
One of these dikes is the type locality of the now discredited "samiresite", a plumbian uranpyrochlore.

Mineral List

Beryl
'Biotite'
Bismite
Bismuth
Bismuthinite
Bismutite
Columbite-(Fe)
Dravite
Euxenite-(Y)
Goethite
Hematite
Magnetite
Monazite-(Ce)
Muscovite
'Psilomelane'
Pucherite
Pyrochlore Group
Pyromorphite
Quartz
var: Rose Quartz
Rutile
var: Ilmenorutile

Rutile
var: Strüverite

Samarskite-(Y)
Schorl
Spessartine
'Uranpyrochlore (of Hogarth 1977)
var: Samiresite'

Xenotime-(Y)
Zircon


28 entries listed. 22 valid minerals.

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References

Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. 624p

Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulouse.

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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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