Mindat Logo

Sahatany Pegmatite Field (Mt Bity (Ibity) area), Vakinankaratra Region (Betafo - Antsirabé region), Antananarivo Province, Madagascar

Sahatany Pegmatite Field is situated ca 25 km SW of the town Antsirabe, and covers an area about 150 km2. This area is in older literature referred to as "Mt. Bity area" (for example in Am. Min. (1916) vol 1, 17-34.) More than 100 pegmatites of both beryl type LCT pegmatites and complex type LCT pegmatites are found in this area, and many of them has been worked for gem polychromatic tourmalines, rose beryl, spodumene, rose quartz etc. An inventory of the pegmatites is found in Rakotoarison, W. (1964):"Les pegmatites de la Sahatany." Archive du Service Géologique Madagascar. A.1983, p.1-39.
The pegmatites (age: panafrican event ca 550 MA) are hosted in a precambrian tectonic unit that is consisting mainly of schists, quartzites and marbles (série schisto-quartzo-dolomitique).

Best references:
Lacroix, A. (1912): "Sur quelques minéraux des pegmatites du Vakinankaratra (Madagascar), Soc. franc.min 35 , 76-78
A.Lacroix(1922-23): Mineralogie de Madagascar I-III.
Ranorosoa N (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulose.
Lefevre, M. & Thomas, L.(1998):"Les pegmatites de la vallée de la Sahatany, Madagascar" in Le Règne Minéral no 19, 15-28
Larsen, K.E.: " Mineralene i Sahatany pegmatittfelt, Madagaskar" in Bergverksmuseets skrifter 25, 5-18(in norwegian)




Mineral list contains contents from all localities listed at bottom of page


Mineral List:
  • Albite
       var: Cleavelandite
  • Allanite-(Ce)
  • Amesite
  • Anatase
  • 'Apatite'
  • Apatite-(CaF)
    var: Manganese-bearing Apatite-(CaF)
  • Arsenic
  • Ashanite
  • Autunite
  • Axinite-(Mn)
  • Baryte
  • Behierite (TL)
  • Beryl
  • Biotite
  • Bismite
  • Bismuth
  • Bismuthinite
  • Bityite (TL)
  • Calcite
  • Cassiterite
  • Chrysoberyl
  • Clinobisvanite
  • 'Clinoptilolite'
  • 'Columbite'
  • Columbite-(Fe)
  • Columbite-(Mn)
  • Cookeite
  • Cordierite
  • Danburite
  • Diopside
  • Dravite
  • Elbaite
       var: Rubellite
       var: Tsilaisite
  • Euxenite-(Y)
  • Fluorite
  • Goethite
  • Hambergite
  • Hematite
  • Hübnerite
  • Ixiolite
  • Lazulite
  • Lepidolite
  • Liddicoatite
  • Lithiophilite
  • Londonite (TL)
  • Magnesiotaaffeite-2N’2S
  • Magnetite
  • Manandonite (TL)
  • Microcline
       var: Amazonite
  • Microlite
  • 'Monazite'
  • Monazite-(Ce)
  • Montmorillonite
  • Muscovite
  • Opal
  • Palygorskite
  • Pollucite
  • 'Psilomelane'
  • Pucherite
  • 'Pyrochlore Group'
  • Pyromorphite
  • Quartz
       var: Amethyst
       var: Rose Quartz
  • Rhodizite
  • Rutile
       var: Ilmenorutile
       var: Strüverite
  • Scheelite
  • Schorl
  • Spessartine
  • Spinel
  • Spodumene
       var: Kunzite
  • Talc
  • Tantalite
  • Tantalite-(Mn)
  • Topaz
  • 'Tourmaline Group'
  • Tremolite
  • Uranmicrolite
  • Uranpyrochlore
    var: Samiresite
  • Uvite
  • Vermiculite
  • Xenotime-(Y)
  • Zinnwaldite
  • Zircon
       var: Hafnian Zircon
  • Zoisite


    92 entries listed. 67 valid minerals. 4 type localities (valid minerals). 1 erroneous literature entry.

    Localities in this Region:
    Madagascar
     
    • Antananarivo Province
      • Vakinankaratra Region (Betafo - Antsirabé region)
        • Sahatany Pegmatite Field (Mt Bity (Ibity) area)
    Madagascar
     
    • Antananarivo Province
      • Vakinankaratra Region (Betafo - Antsirabé region)
        • Sahatany Pegmatite Field (Mt Bity (Ibity) area)
          • Sahatany Valley

    The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database!
    This page is currently not sponsored. Click here to find out how you can sponsor this page.


    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon & Ida Ralph 1993-2008. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the 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 hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register.