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Ambohimasina, Betafo District, Vakinankaratra, Madagascari
Regional Level Types
AmbohimasinaCommune
Betafo DistrictDistrict
VakinankaratraRegion
MadagascarCountry

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PhotosMapsSearch
00482300014950478655464.jpg
Xenotime-(Y)

Ambohimasina, Betafo District, Vakinankaratra, Madagascar
09103150014950186346881.jpg
Fergusonite

Ambohimasina, Betafo District, Vakinankaratra, Madagascar
09898050014950186346671.jpg
Fergusonite

Ambohimasina, Betafo District, Vakinankaratra, Madagascar
08577230014946279971919.jpg
Xenotime-(Y)

Ambohimasina, Betafo District, Vakinankaratra, Madagascar
09103150014950186346881.jpg
Fergusonite

Ambohimasina, Betafo District, Vakinankaratra, Madagascar
09898050014950186346671.jpg
Fergusonite

Ambohimasina, Betafo District, Vakinankaratra, Madagascar
06206530014946279985943.jpg
Xenotime-(Y)

Ambohimasina, Betafo District, Vakinankaratra, Madagascar
09103150014950186346881.jpg
Fergusonite

Ambohimasina, Betafo District, Vakinankaratra, Madagascar
Neighbouring regions:
Soavina, Betafo District, Vakinankaratra, Madagascar
Fidirana, Mandoto, Vakinankaratra, Madagascar
Miandrarivo, Faratsiho, Vakinankaratra, Madagascar
Vinaninony Atsimo, Faratsiho, Vakinankaratra, Madagascar
Ambatonikolahy, Betafo District, Vakinankaratra, Madagascar
Inanantonana, Betafo District, Vakinankaratra, Madagascar
Type:
Commune
Mindat Locality ID:
133033
Long-form identifier:
mindat:1:2:133033:8
GUID (UUID V4):
12704db8-1475-4db5-9235-51203a514bdb
Other Languages:
Malagasy:
Kaominin' Ambohimasina, Distrikan'i Betafo, Vakinankaratra, Madagasikara


A number of pegmatites prospected for beryl and U-minerals are found in the Ambohimasina Commune in the south and in the Faratsiho Commune in the North along the border of the Vavavato granite massif some 40 km NW of the town Antsirabe in the main highland of Madagascar.

These pegmatites as a group has been refered to by Besaire (1966) as "La groupe d'Ambohimasina". Among these are the Ampangabe (the locality from which the now descredited "Ampangabeite" , synonym of Samarskite=(Y) was described from), Sahamandrevo, Lohavalala and Ambatovoahangy pegmatites.

Nice amethyst among others are also known from this commune.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

12 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Beryl
Formula: Be3Al2(Si6O18)
ⓘ Bismuthinite
Formula: Bi2S3
Description: pseudomorphed to bismutite
ⓘ Columbite-(Fe)
Formula: Fe2+Nb2O6
ⓘ 'Columbite-Tantalite'
ⓘ Euxenite-(Y)
Formula: (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
ⓘ 'Fergusonite'
ⓘ Ilmenite
Formula: Fe2+TiO3
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Fuchsite
Formula: K(Al,Cr)3Si3O10(OH)2
ⓘ 'Pyrochlore Supergroup'
Formula: A2-mD2X6-wZ1-n
ⓘ 'Pyrochlore Supergroup var. Betafite (of Hogarth 1977)'
Formula: (Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
ⓘ Quartz
Formula: SiO2
ⓘ Quartz var. Amethyst
Formula: SiO2
ⓘ Quartz var. Pseudocubic Quartz
Formula: SiO2
ⓘ Samarskite-(Y)
Formula: YFe3+Nb2O8
ⓘ Thorite
Formula: Th(SiO4)
ⓘ Thorite var. Orangite
Formula: Th(SiO4)
ⓘ Vermiculite
Formula: Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
ⓘ Xenotime-(Y)
Formula: Y(PO4)
ⓘ Zircon
Formula: Zr(SiO4)

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘBismuthinite2.DB.05Bi2S3
Group 4 - Oxides and Hydroxides
ⓘColumbite-(Fe)4.DB.35Fe2+Nb2O6
ⓘEuxenite-(Y)4.DG.05(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
ⓘIlmenite4.CB.05Fe2+TiO3
ⓘQuartz4.DA.05SiO2
ⓘvar. Amethyst4.DA.05SiO2
ⓘvar. Pseudocubic Quartz4.DA.05SiO2
ⓘSamarskite-(Y)4.DB.25YFe3+Nb2O8
Group 8 - Phosphates, Arsenates and Vanadates
ⓘXenotime-(Y)8.AD.35Y(PO4)
Group 9 - Silicates
ⓘBeryl9.CJ.05Be3Al2(Si6O18)
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Fuchsite9.EC.15K(Al,Cr)3Si3O10(OH)2
ⓘThorite9.AD.30Th(SiO4)
ⓘvar. Orangite9.AD.30Th(SiO4)
ⓘVermiculite9.EC.50Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
ⓘZircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
ⓘ'Columbite-Tantalite'-
ⓘ'Fergusonite'-
ⓘ'Pyrochlore Supergroup'-A2-mD2X6-wZ1-n
ⓘ'var. Betafite (of Hogarth 1977)'-(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)

List of minerals for each chemical element

HHydrogen
Hⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Hⓘ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Hⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
BeBeryllium
Beⓘ BerylBe3Al2(Si6O18)
OOxygen
Oⓘ Samarskite-(Y)YFe3+Nb2O8
Oⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Oⓘ Thorite var. OrangiteTh(SiO4)
Oⓘ ZirconZr(SiO4)
Oⓘ BerylBe3Al2(Si6O18)
Oⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Oⓘ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Oⓘ IlmeniteFe2+TiO3
Oⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Oⓘ Xenotime-(Y)Y(PO4)
Oⓘ Quartz var. AmethystSiO2
Oⓘ Quartz var. Pseudocubic QuartzSiO2
Oⓘ ThoriteTh(SiO4)
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ Columbite-(Fe)Fe2+Nb2O6
NaSodium
Naⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
MgMagnesium
Mgⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
AlAluminium
Alⓘ BerylBe3Al2(Si6O18)
Alⓘ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Alⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ Thorite var. OrangiteTh(SiO4)
Siⓘ ZirconZr(SiO4)
Siⓘ BerylBe3Al2(Si6O18)
Siⓘ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Siⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Siⓘ Quartz var. AmethystSiO2
Siⓘ Quartz var. Pseudocubic QuartzSiO2
Siⓘ ThoriteTh(SiO4)
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
PPhosphorus
Pⓘ Xenotime-(Y)Y(PO4)
SSulfur
Sⓘ BismuthiniteBi2S3
KPotassium
Kⓘ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Caⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
TiTitanium
Tiⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Tiⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Tiⓘ IlmeniteFe2+TiO3
CrChromium
Crⓘ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
FeIron
Feⓘ Samarskite-(Y)YFe3+Nb2O8
Feⓘ IlmeniteFe2+TiO3
Feⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Feⓘ Columbite-(Fe)Fe2+Nb2O6
YYttrium
Yⓘ Samarskite-(Y)YFe3+Nb2O8
Yⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Yⓘ Xenotime-(Y)Y(PO4)
ZrZirconium
Zrⓘ ZirconZr(SiO4)
NbNiobium
Nbⓘ Samarskite-(Y)YFe3+Nb2O8
Nbⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Nbⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Nbⓘ Columbite-(Fe)Fe2+Nb2O6
CeCerium
Ceⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
TaTantalum
Taⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Taⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
BiBismuth
Biⓘ BismuthiniteBi2S3
ThThorium
Thⓘ Thorite var. OrangiteTh(SiO4)
Thⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Thⓘ ThoriteTh(SiO4)
UUranium
Uⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Uⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6

Fossils

This region is too big or complex to display the fossil list, try looking at smaller subregions.

Other Databases

GeoNames ID:11926699

Localities in this Region

Madagascar

Other Regions, Features and Areas that Intersect

Madagascar
Somali PlateTectonic Plate

This page 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 locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Behier, J. (1963) Carte minéralogique de Madagascar. Archive Service Géologique Madagascar. A 1871.
Besairie, H. (1966) Les Gîtes Minéraux de Madagascar. Annales Géologiques de Madagascar, Tananarive, 34, 92p.
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