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Miarinkofeno pegmatite, Andranomiady, Ankazobe District, Analamanga, Madagascari
Regional Level Types
Miarinkofeno pegmatitePegmatite
AndranomiadyCommune
Ankazobe DistrictDistrict
AnalamangaRegion
MadagascarCountry

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Latitude & Longitude (WGS84):
18° 9' 36'' South , 47° 27' 54'' East
Latitude & Longitude (decimal):
-18.16000,47.46500
GeoHash:
G#: mhcb8n4fq
GRN:
S13E32
Type:
Pegmatite
Köppen climate type:
Cwb : Subtropical highland climate or temperate oceanic climate with dry winters
Nearest Settlements:
PlacePopulationDistance
Ankazobe15,722 (2018)40.7km
Anjozorobe19,027 (2018)50.1km
Sadabe17,000 (2018)58.2km
Mindat Locality ID:
108868
Long-form identifier:
mindat:1:2:108868:0
GUID (UUID V4):
84e9352a-664d-4355-9e57-b7f6fcb195d9
Other/historical names associated with this locality:
Haute Betsiboka
Other Languages:
Malagasy:
Miarinkofeno, Kaominin' Andranomiady, Distrikan' Ankazobe, Faritr' Analamanga, Madagasikara


A pegmatite prospected by the Commisariat á l'Énergie (CEA) in the 1950s situated about 28 km NNE of the town Ankazobe, North of the capitol, Antananarivo, on the left side of the Betsiboka River, between Maharidaza and Befanamo. According to Guigues (1955) it is located about 3,5 km NW of the Befanamo pegmatite. The pegmatite is located about 300 m east of the village of Miarinkofeno, close to a tomb. The workings, 6 trenches of 2 m each were done in the eluvials of the pegmatite (Guiguges 1955).
CEA extracted a large quantity of xenotime-(Y) from this site.
The coordinates are for the village.

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Standard Detailed Gallery Strunz Chemical Elements

Commodity List

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


Mineral List


7 valid minerals. 1 erroneous literature entry.

Rock Types Recorded

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

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Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Beryl
Formula: Be3Al2(Si6O18)
ⓘ 'Columbite-(Fe)-Columbite-(Mn) Series'
ⓘ Euxenite-(Y)
Formula: (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Rutile
Formula: TiO2
ⓘ Rutile var. Ilmenorutile
Formula: (Ti,Nb)O2
ⓘ Samarskite-(Y)
Formula: YFe3+Nb2O8
ⓘ Thortveitite
Formula: Sc2Si2O7
Colour: greyishwhite
Description: Described by Guigues (1955) as "1 crystal en forme de pyramide allongée tronquée". Showed by Behier (1960) to be a zircon.
ⓘ Xenotime-(Y)
Formula: Y(PO4)
ⓘ Zircon
Formula: Zr(SiO4)
ⓘ Zircon var. Malacon
Formula: Zr(SiO4)

Gallery:

(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6ⓘ Euxenite-(Y)

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘRutile
var. Ilmenorutile		4.DB.05(Ti,Nb)O2
ⓘ4.DB.05TiO2
ⓘSamarskite-(Y)4.DB.25YFe3+Nb2O8
ⓘEuxenite-(Y)4.DG.05(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Group 8 - Phosphates, Arsenates and Vanadates
ⓘXenotime-(Y)8.AD.35Y(PO4)
Group 9 - Silicates
ⓘZircon9.AD.30Zr(SiO4)
ⓘvar. Malacon9.AD.30Zr(SiO4)
ⓘThortveitite ?9.BC.05Sc2Si2O7
ⓘBeryl9.CJ.05Be3Al2(Si6O18)
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified
ⓘ'Columbite-(Fe)-Columbite-(Mn) Series'-

List of minerals for each chemical element

HHydrogen
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
BeBeryllium
Beⓘ BerylBe3Al2(Si6O18)
OOxygen
Oⓘ BerylBe3Al2(Si6O18)
Oⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Oⓘ Rutile var. Ilmenorutile(Ti,Nb)O2
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ RutileTiO2
Oⓘ Samarskite-(Y)YFe3+Nb2O8
Oⓘ ThortveititeSc2Si2O7
Oⓘ Xenotime-(Y)Y(PO4)
Oⓘ ZirconZr(SiO4)
Oⓘ Zircon var. MalaconZr(SiO4)
AlAluminium
Alⓘ BerylBe3Al2(Si6O18)
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ BerylBe3Al2(Si6O18)
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ ThortveititeSc2Si2O7
Siⓘ ZirconZr(SiO4)
Siⓘ Zircon var. MalaconZr(SiO4)
PPhosphorus
Pⓘ Xenotime-(Y)Y(PO4)
KPotassium
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
ScScandium
Scⓘ ThortveititeSc2Si2O7
TiTitanium
Tiⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Tiⓘ Rutile var. Ilmenorutile(Ti,Nb)O2
Tiⓘ RutileTiO2
FeIron
Feⓘ Samarskite-(Y)YFe3+Nb2O8
YYttrium
Yⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Yⓘ Samarskite-(Y)YFe3+Nb2O8
Yⓘ Xenotime-(Y)Y(PO4)
ZrZirconium
Zrⓘ ZirconZr(SiO4)
Zrⓘ Zircon var. MalaconZr(SiO4)
NbNiobium
Nbⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Nbⓘ Rutile var. Ilmenorutile(Ti,Nb)O2
Nbⓘ Samarskite-(Y)YFe3+Nb2O8
CeCerium
Ceⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
TaTantalum
Taⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
ThThorium
Thⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
UUranium
Uⓘ Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6

Other Regions, Features and Areas containing this locality

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

Guigues, J. (1955) Étude des gisements de pegmatite de Madagascar (Deuxième partie) Travaux du Bureau Gèologique de Madagascar 67. Haut Commisariat de Madagascar et dependancespp.8-9
Behier, Jean (1960) Contribution à la minéralogie de Madagascar. Annales géologiques de Madagascar Vol. 29. République Malgachepp.36-36 - on euxenite-(Y)
Behier, Jean (1963) Carte minéralogique de Madagascar. Archive Service Géologique de Madagascar A.1871
Selvig, L. K., Inn, K. G. W., Outola, I. M. J., Kurosaki, H., Lee, K. A. (2005) Dissolution of resistate minerals containing uranium and thorium: Environmental implications. Journal of Radioanalytical and Nuclear Chemistry, 263. 341-348 doi:10.1007/s10967-005-0060-ysample of xenotime from Miarinkofeno used in the study
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