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Antsofimbato pegmatites, Mangarano, Antsirabe II District, Vakinankaratra, Madagascari
Regional Level Types
Antsofimbato pegmatitesPegmatite Field
MangaranoCommune
Antsirabe II DistrictRural District
VakinankaratraRegion
MadagascarCountry
Antsofimbato pegmatites, Sahatany Pegmatite Field (Mt Ibity area), Madagascar

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05540150017272082577039.jpg
Antsofimbato pegmatites in 1999

Antsofimbato pegmatites, Mangarano, Antsirabe II District, Vakinankaratra, Madagascar
05540150017272082577039.jpg
Antsofimbato pegmatites in 1999

Antsofimbato pegmatites, Mangarano, Antsirabe II District, Vakinankaratra, Madagascar
05540150017272082577039.jpg
Antsofimbato pegmatites in 1999

Antsofimbato pegmatites, Mangarano, Antsirabe II District, Vakinankaratra, Madagascar
Latitude & Longitude (WGS84):
19° 59' 4'' South , 46° 57' 7'' East
Latitude & Longitude (decimal):
-19.98472,46.95222
GRN:
S14E32
Type:
Pegmatite Field
Köppen climate type:
Cwb : Subtropical highland climate or temperate oceanic climate with dry winters
Mindat Locality ID:
56777
Long-form identifier:
mindat:1:2:56777:5
GUID (UUID V4):
0
Other/historical names associated with this locality:
Sahatany pegmatite field
Other Languages:
Malagasy:
Karieran' Antsofimbato, Kaominin'i Mangarano, Distrikan' Antsirabe II, Vakinankaratra, Madagasikara


Kaolinitized granite pegmatites hosted in mica schist worked for gemstones (tourmalines, beryl).
The locality often named Antsofimbato consist actually of 4 different pegmatite quarries named Antsofimbato I, II, III and IV respectively. (The Antsofimbato IV is not identical with Guigues Antsofimbato IV which = Ambatonapetraka). These are situated close to each other between the village Ambatonapetraka and Mt. Antsofimbato, in the NE part of the Sahatany pegmatite Field, S of the town Antsirabe in the main highland of Madagascar.

The main quarry is located about 500 SE of the Ambatonapetraka pegmatites.

The bityite, chrysoberyl and magnesiotaaffeite-2N’2S has only been reported from the one of the pegmatites, designated P30 by Ranorosoa (1986) and Antsofimbato IV by Rasoanaivo et al. (1983). This pegmatite (Antsofimbato IV) was found and researched by "the mission géologique soviéto-malgache" in 1983 (Rasoanaivo et al. 1983).

Raktoarison (1964) locality nr 2.
Ranorosoa (1986): P26 and P30(= Antsofimbato sud).


Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

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


Mineral List


21 valid minerals.

Rock Types Recorded

Note: 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)
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Bityite
Formula: CaLiAl2(AlBeSi2O10)(OH)2
Description: Small micalike, lamellary
ⓘ Cassiterite
Formula: SnO2
ⓘ Chrysoberyl
Formula: BeAl2O4
Habit: Grains
Colour: Colorless
Description: As small colorless grains associated with elbaite
ⓘ Columbite-(Fe)
Formula: Fe2+Nb2O6
ⓘ Dravite
Formula: NaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘ Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Colour: Green
ⓘ Goethite
Formula: Fe3+O(OH)
ⓘ Hematite
Formula: Fe2O3
ⓘ Kaolinite
Formula: Al2(Si2O5)(OH)4
ⓘ 'Lepidolite'
ⓘ Liddicoatite ?
Formula: Ca(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘ Magnesiotaaffeite-2N’2S
Formula: Mg3Al8BeO16
Habit: colourless grains
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ 'Microlite Group'
Formula: A2-mTa2X6-wZ-n
ⓘ 'Monazite Group'
Formula: REE(PO4)
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ 'Psilomelane'
ⓘ Quartz
Formula: SiO2
ⓘ Rutile
Formula: TiO2
ⓘ Rutile var. Ilmenorutile
Formula: (Ti,Nb)O2
ⓘ Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘ Spessartine
Formula: Mn2+3Al2(SiO4)3
ⓘ Spinel
Formula: MgAl2O4
Colour: pale bluish
Description: mm-sized octaedra
ⓘ 'Tourmaline'
Formula: AD3G6(T6O18)(BO3)3X3Z
ⓘ 'Tourmaline var. Rubellite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
ⓘ Xenotime-(Y)
Formula: Y(PO4)
ⓘ Zircon
Formula: Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘGoethite4.00.Fe3+O(OH)
ⓘ'Microlite Group'4.00.A2-mTa2X6-wZ-n
ⓘChrysoberyl4.BA.05BeAl2O4
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘSpinel4.BB.05MgAl2O4
ⓘHematite4.CB.05Fe2O3
ⓘQuartz4.DA.05SiO2
ⓘCassiterite4.DB.05SnO2
ⓘRutile
var. Ilmenorutile		4.DB.05(Ti,Nb)O2
ⓘ4.DB.05TiO2
ⓘColumbite-(Fe)4.DB.35Fe2+Nb2O6
ⓘMagnesiotaaffeite-2N’2S4.FC.25Mg3Al8BeO16
Group 8 - Phosphates, Arsenates and Vanadates
ⓘXenotime-(Y)8.AD.35Y(PO4)
Group 9 - Silicates
ⓘSpessartine9.AD.25Mn2+3Al2(SiO4)3
ⓘZircon9.AD.30Zr(SiO4)
ⓘBeryl9.CJ.05Be3Al2(Si6O18)
ⓘDravite9.CK.05NaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘElbaite9.CK.05Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘLiddicoatite ?9.CK.05Ca(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘSchorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘBityite9.EC.35CaLiAl2(AlBeSi2O10)(OH)2
ⓘKaolinite9.ED.05Al2(Si2O5)(OH)4
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Lepidolite'-
ⓘ'Monazite Group'-REE(PO4)
ⓘ'Psilomelane'-
ⓘ'Tourmaline
var. Rubellite'		-A(D3)G6(T6O18)(BO3)3X3Z
ⓘ''-AD3G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ BityiteCaLiAl2(AlBeSi2O10)(OH)2
Hⓘ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Hⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Hⓘ GoethiteFe3+O(OH)
Hⓘ KaoliniteAl2(Si2O5)(OH)4
Hⓘ LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
LiLithium
Liⓘ BityiteCaLiAl2(AlBeSi2O10)(OH)2
Liⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Liⓘ LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
BeBeryllium
Beⓘ BityiteCaLiAl2(AlBeSi2O10)(OH)2
Beⓘ BerylBe3Al2(Si6O18)
Beⓘ ChrysoberylBeAl2O4
Beⓘ Magnesiotaaffeite-2N’2SMg3Al8BeO16
BBoron
Bⓘ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Bⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Bⓘ LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Bⓘ Tourmaline var. RubelliteA(D3)G6(T6O18)(BO3)3X3Z
Bⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Bⓘ TourmalineAD3G6(T6O18)(BO3)3X3Z
OOxygen
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ BityiteCaLiAl2(AlBeSi2O10)(OH)2
Oⓘ BerylBe3Al2(Si6O18)
Oⓘ CassiteriteSnO2
Oⓘ ChrysoberylBeAl2O4
Oⓘ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Oⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Oⓘ Columbite-(Fe)Fe2+Nb2O6
Oⓘ GoethiteFe3+O(OH)
Oⓘ HematiteFe2O3
Oⓘ Rutile var. Ilmenorutile(Ti,Nb)O2
Oⓘ KaoliniteAl2(Si2O5)(OH)4
Oⓘ LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ Monazite GroupREE(PO4)
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ Tourmaline var. RubelliteA(D3)G6(T6O18)(BO3)3X3Z
Oⓘ RutileTiO2
Oⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Oⓘ SpessartineMn32+Al2(SiO4)3
Oⓘ SpinelMgAl2O4
Oⓘ Magnesiotaaffeite-2N’2SMg3Al8BeO16
Oⓘ TourmalineAD3G6(T6O18)(BO3)3X3Z
Oⓘ Xenotime-(Y)Y(PO4)
Oⓘ ZirconZr(SiO4)
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
NaSodium
Naⓘ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Naⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Naⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Mgⓘ SpinelMgAl2O4
Mgⓘ Magnesiotaaffeite-2N’2SMg3Al8BeO16
AlAluminium
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ BityiteCaLiAl2(AlBeSi2O10)(OH)2
Alⓘ BerylBe3Al2(Si6O18)
Alⓘ ChrysoberylBeAl2O4
Alⓘ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Alⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Alⓘ KaoliniteAl2(Si2O5)(OH)4
Alⓘ LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Alⓘ SpessartineMn32+Al2(SiO4)3
Alⓘ SpinelMgAl2O4
Alⓘ Magnesiotaaffeite-2N’2SMg3Al8BeO16
SiSilicon
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ BityiteCaLiAl2(AlBeSi2O10)(OH)2
Siⓘ BerylBe3Al2(Si6O18)
Siⓘ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Siⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Siⓘ KaoliniteAl2(Si2O5)(OH)4
Siⓘ LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Siⓘ SpessartineMn32+Al2(SiO4)3
Siⓘ ZirconZr(SiO4)
PPhosphorus
Pⓘ Monazite GroupREE(PO4)
Pⓘ Xenotime-(Y)Y(PO4)
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ BityiteCaLiAl2(AlBeSi2O10)(OH)2
Caⓘ LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ Rutile var. Ilmenorutile(Ti,Nb)O2
Tiⓘ RutileTiO2
MnManganese
Mnⓘ SpessartineMn32+Al2(SiO4)3
FeIron
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ Columbite-(Fe)Fe2+Nb2O6
Feⓘ GoethiteFe3+O(OH)
Feⓘ HematiteFe2O3
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
YYttrium
Yⓘ Xenotime-(Y)Y(PO4)
ZrZirconium
Zrⓘ ZirconZr(SiO4)
NbNiobium
Nbⓘ Columbite-(Fe)Fe2+Nb2O6
Nbⓘ Rutile var. Ilmenorutile(Ti,Nb)O2
SnTin
Snⓘ CassiteriteSnO2
TaTantalum
Taⓘ Microlite GroupA2-mTa2X6-wZ-n

Other Regions, Features and Areas containing this locality

AfricaContinent
African Plate
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. (1954) Étude des gisements de pegmatites de Madagascar (première partie) Travaux du Bureau Gèologique de Madagascar 58. Haut Commisariat de Madagascar et dependances
Behier, Jean (1963) Carte minéralogique de Madagascar. Archive Service Géologique de Madagascar A.1871
Rakotoarison, W. (1964, May) Les pegmatites de la Sahatany. Archive Service Géologique de Madagascar A. 1983. Service Géologique
Rasoanaivo, J., Grinwald, M., Chkil, N., Khaikine, E., Rakotomavo, G. , Rakotonanahary and Boiko, T. (1983): Rapport sur les résultats des travaux de recherches réalisées dans la partie Nord du champ pegmatitique de la Sahatany. Service Géologique d'Antananarivo.
Ranorosoa, Nadine (1986) Thèse de doctorat de L'Université Paul Sabatier, Toulouse. Étude minéralogique des pegmatites du champ de la Sahatany, Madagascar, 1-240
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