Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (2 online) Mindat Auctions

Tsaramanga (Tongafeni; Itongafeno) pegmatite, Mahaiza Commune, Betafo District, Vakinankaratra Region (Betafo - Antsirabé region), Antananarivo Province, Madagascar

StandardDetailedBy ChemistryMineral Photos (5)Search Google

(Tsaramanga (Tongafeni; Itongafeno), Kaominina Mahaiza, Distrikan' i Betafo, Faritra Vakinankaratra, Faritany Antananarivo, Madagasikara)

The Tsaramanga or the “Itongafeno” 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.



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)




Group 2 - Sulphides and Sulfosalts
  		• Molybdenite2.EA.30
    MoS
     
    2
    Group 4 - Oxides and Hydroxides
  		• Aeschynite-(Y)4.DF.05
    (Y,Ca,Fe,Th)(Ti,Nb)
     
    2
    		(O,OH)
     
    6
  		• Betafite4.DH.15
    (Ca,U)
     
    2
    		(Ti,Nb)
     
    2
    		O
     
    6
    		(OH)
  		• Bismite4.CB.60
    Bi
     
    2
    		O
     
    3
  		• Columbite-(Mn)4.DB.35
    (Mn,Fe)(Nb,Ta)
     
    2
    		O
     
    6
  		• Euxenite-(Y)4.DG.05
    (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)
     
    2
    		O
     
    6
  		• Magnetite4.BB.05
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
  		• Quartz
    var: Amethyst    		4.DA.05
    SiO
     
    2
      var: Rose Quartz4.DA.05
    SiO
     
    2
  		• Rutile4.DB.05
    TiO
     
    2
      var: Ilmenorutile4.DB.05
    Fe
     
    x
    		(Nb,Ta)
     
    2x
    		·4Ti
     
    1-x
    		O
     
    2
      var: Strüverite4.DB.05
    (Ti,Ta,Fe)O
     
    2
    Group 5 - Nitrates and Carbonates
  		• Bismutite5.BE.25
    (BiO)
     
    2
    		CO
     
    3
    Group 8 - Phosphates, Arsenates and Vanadates
  		• Monazite-(Ce)8.AD.50
    (Ce,La,Nd,Th)PO
     
    4
  		• Pucherite8.AD.40
    BiVO
     
    4
    Group 9 - Silicates
  		• Beryl9.CJ.05
    Be
     
    3
    		Al
     
    2
    		Si
     
    6
    		O
     
    18
  		• Biotite9..
  		• Epidote9.BG.05
    {Ca
     
    2
    		}{Al
     
    2
    		Fe
    3+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
  		• Spessartine9.AD.25
    Mn
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
  		• Zircon9.AD.30
    Zr[SiO
     
    4
    		]
      var: Cyrtolite9.AD.30
    Zr[(SiO
     
    4
    		),(OH)
     
    4
    		]
      var: Malacon9.AD.30
    Zr[SiO
     
    4
    		]
    Unclassified Minerals
  		• 'Almandine-Spessartine Series'-
  		• Columbite-
    (Fe,Mn)(Nb,Ta)
     
    2
    		O
     
    6
  		• 'Columbite-Tantalite'-
  		• 'Pyrochlore Group'-
  		• 'Tourmaline'-
    AD
     
    3
    		G
     
    6
    		(BO
     
    3
    		)
     
    3
    		[T
     
    6
    		O
     
    18
    		]Y
     
    3
    		Z


    27 entries listed. 21 valid minerals.

    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 Ralph and Ida Chau 1993-2009. 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. Current server date and time: 28th Nov 2009 08:24:02