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Fefena pegmatite, Betafo, Vakinankaratra, Madagascari
Regional Level Types
Fefena pegmatitePegmatite
BetafoDistrict
VakinankaratraRegion
MadagascarCountry

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Name in Malagasy:Fefena, Distrikan'i Betafo, Vakinankaratra, Madagasikara
Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 19° South , 46° East (est.)
Margin of Error:~81km
Locality type:Pegmatite
Köppen climate type:Cwa : Monsoon-influenced humid subtropical climate


A granite pegmatite hosted in quartzite worked around 1914 for beryl.

Regions containing this locality

Somali Plate (Somalia Plate)Tectonic Plate
Antananarivo Province, MadagascarProvince (Abolished)

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


6 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Beryl
Formula: Be3Al2(Si6O18)
Reference: Ungemach, M.H. (1916) Contribution à la Minéralogie de Madagascar. Bulletin de la Société française de minéralogie 39: 5-38; Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Bismutite
Formula: (BiO)2CO3
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
'Columbite-(Fe)-Columbite-(Mn) Series'
Reference: Ungemach, M.H. (1916) Contribution á la Minéralogie de Madagascar. Bulletin de la Société française de minéralogie. 39: 5-38
Euxenite-(Y)
Formula: (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Reference: RAKOTOARISOA Nivomalala : CONTRIBUTION A L’ ETUDE MONOGRAPHIQUE DES GITES PEGMATITIQUES DE LA REGION DE BETAFO – ANTSIRABE . INTERPRETATION STRUCTURALE D’IMAGES LANDSAT. Ecole Supérieure Polytechnique d'Antananarivo 2003
'Pyrochlore Supergroup'
Formula: A2-mD2X6-wZ1-n
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
'Pyrochlore Supergroup var: Betafite (of Hogarth 1977)'
Formula: A2-mD2X6-wZ1+w
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Quartz
Formula: SiO2
Reference: RAKOTOARISOA Nivomalala : CONTRIBUTION A L’ ETUDE MONOGRAPHIQUE DES GITES PEGMATITIQUES DE LA REGION DE BETAFO – ANTSIRABE . INTERPRETATION STRUCTURALE D’IMAGES LANDSAT. Ecole Supérieure Polytechnique d'Antananarivo 2003
Quartz var: Amethyst
Formula: SiO2
Reference: RAKOTOARISOA Nivomalala : CONTRIBUTION A L’ ETUDE MONOGRAPHIQUE DES GITES PEGMATITIQUES DE LA REGION DE BETAFO – ANTSIRABE . INTERPRETATION STRUCTURALE D’IMAGES LANDSAT. Ecole Supérieure Polytechnique d'Antananarivo 2003
Quartz var: Rose Quartz
Formula: SiO2
Reference: RAKOTOARISOA Nivomalala : CONTRIBUTION A L’ ETUDE MONOGRAPHIQUE DES GITES PEGMATITIQUES DE LA REGION DE BETAFO – ANTSIRABE . INTERPRETATION STRUCTURALE D’IMAGES LANDSAT. Ecole Supérieure Polytechnique d'Antananarivo 2003
Rutile
Formula: TiO2
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Rutile var: Strüverite
Formula: (Ti,Ta,Fe)O2
Reference: Ungemach, M.H. (1916) Contribution á la Minéralogie de Madagascar. Bulletin de la Société française de minéralogie. 39: 5-38; Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Samarskite-(Y)
Formula: (Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871; Ungemach, M.H. (1916) Contribution á la Minéralogie de Madagascar. Bulletin de la Société française de minéralogie. 39: 5-38
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Colour: black
Reference: Ungemach, M.H. (1916) Contribution à la Minéralogie de Madagascar. Bulletin de la Société française de minéralogie 39: 5-38; Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
'Uranpyrochlore (of Hogarth 1977)'
Formula: (Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. p 374
'Uranpyrochlore (of Hogarth 1977) var: Samiresite'
Formula: (U,Ca,Ce)2(Nb,Ta)2O6(OH,F)
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. p 374

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Euxenite-(Y)4.DG.05(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Quartz4.DA.05SiO2
var: Amethyst4.DA.05SiO2
var: Rose Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
var: Strüverite4.DB.05(Ti,Ta,Fe)O2
Samarskite-(Y)4.DB.25(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
'Uranpyrochlore (of Hogarth 1977)'4.DH.15(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
'var: Samiresite'4.DH.15(U,Ca,Ce)2(Nb,Ta)2O6(OH,F)
Group 5 - Nitrates and Carbonates
Bismutite5.BE.25(BiO)2CO3
Group 9 - Silicates
Beryl9.CJ.05Be3Al2(Si6O18)
Unclassified Minerals, Rocks, etc.
'Columbite-(Fe)-Columbite-(Mn) Series'-
'Pyrochlore Supergroup'-A2-mD2X6-wZ1-n
'var: Betafite (of Hogarth 1977)'-A2-mD2X6-wZ1+w
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
AX2
Rutile4.4.1.1TiO2
var: Strüverite4.4.1.3(Ti,Ta,Fe)O2
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
ABO4
Samarskite-(Y)8.1.11.1(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
A2B2O6(O,OH,F)
'Pyrochlore Supergroup
var: Betafite (of Hogarth 1977)'
8.2.3.1A2-mD2X6-wZ1+w
'Uranpyrochlore (of Hogarth 1977)'8.2.1.7(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
AB2O6
Euxenite-(Y)8.3.8.2(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Bismutite16a.3.5.1(BiO)2CO3
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
Beryl61.1.1.1Be3Al2(Si6O18)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Columbite-(Fe)-Columbite-(Mn) Series'-
'Pyrochlore Supergroup'-A2-mD2X6-wZ1-n
Quartz
var: Amethyst
-SiO2
var: Rose Quartz-SiO2
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z
'Uranpyrochlore (of Hogarth 1977)
var: Samiresite'
-(U,Ca,Ce)2(Nb,Ta)2O6(OH,F)

List of minerals for each chemical element

HHydrogen
H Uranpyrochlore (of Hogarth 1977) (var: Samiresite)(U,Ca,Ce)2(Nb,Ta)2O6(OH,F)
H Uranpyrochlore (of Hogarth 1977)(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
BeBeryllium
Be BerylBe3Al2(Si6O18)
BBoron
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
CCarbon
C Bismutite(BiO)2CO3
OOxygen
O BerylBe3Al2(Si6O18)
O Rutile (var: Strüverite)(Ti,Ta,Fe)O2
O Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
O Bismutite(BiO)2CO3
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
O Uranpyrochlore (of Hogarth 1977) (var: Samiresite)(U,Ca,Ce)2(Nb,Ta)2O6(OH,F)
O Quartz (var: Rose Quartz)SiO2
O Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
O Quartz (var: Amethyst)SiO2
O RutileTiO2
O Uranpyrochlore (of Hogarth 1977)(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
O QuartzSiO2
FFluorine
F Uranpyrochlore (of Hogarth 1977) (var: Samiresite)(U,Ca,Ce)2(Nb,Ta)2O6(OH,F)
F Uranpyrochlore (of Hogarth 1977)(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
AlAluminium
Al BerylBe3Al2(Si6O18)
SiSilicon
Si BerylBe3Al2(Si6O18)
Si Quartz (var: Rose Quartz)SiO2
Si Quartz (var: Amethyst)SiO2
Si QuartzSiO2
CaCalcium
Ca Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Ca Uranpyrochlore (of Hogarth 1977) (var: Samiresite)(U,Ca,Ce)2(Nb,Ta)2O6(OH,F)
Ca Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Ca Uranpyrochlore (of Hogarth 1977)(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
TiTitanium
Ti Rutile (var: Strüverite)(Ti,Ta,Fe)O2
Ti Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Ti RutileTiO2
Ti Uranpyrochlore (of Hogarth 1977)(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
FeIron
Fe Rutile (var: Strüverite)(Ti,Ta,Fe)O2
Fe Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
YYttrium
Y Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Y Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
NbNiobium
Nb Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Nb Uranpyrochlore (of Hogarth 1977) (var: Samiresite)(U,Ca,Ce)2(Nb,Ta)2O6(OH,F)
Nb Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Nb Uranpyrochlore (of Hogarth 1977)(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
CeCerium
Ce Uranpyrochlore (of Hogarth 1977) (var: Samiresite)(U,Ca,Ce)2(Nb,Ta)2O6(OH,F)
Ce Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Ce Uranpyrochlore (of Hogarth 1977)(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
TaTantalum
Ta Rutile (var: Strüverite)(Ti,Ta,Fe)O2
Ta Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Ta Uranpyrochlore (of Hogarth 1977) (var: Samiresite)(U,Ca,Ce)2(Nb,Ta)2O6(OH,F)
Ta Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Ta Uranpyrochlore (of Hogarth 1977)(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
BiBismuth
Bi Bismutite(BiO)2CO3
ThThorium
Th Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Th Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
UUranium
U Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
U Uranpyrochlore (of Hogarth 1977) (var: Samiresite)(U,Ca,Ce)2(Nb,Ta)2O6(OH,F)
U Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
U Uranpyrochlore (of Hogarth 1977)(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Ungemach, M.H. (1916) Contribution à la Minéralogie de Madagascar. Bulletin de la Société française de minéralogie 39: 5-38 (on a find of strüverite and black tourmaline).
Lacroix, A. (1922) Minéralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A. Challamel (Éditeur), Paris. p. 374.
Behier, J. (1963) Carte minéralogique de Madagascar. Archive Service Géologique Madagascar. A 1871.


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