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Ilapa, Sahatany Valley, Ibity, Antsirabe II District, Vakinankaratra, Madagascari
Regional Level Types
IlapaGroup of Workingses
Sahatany ValleyValley
IbityCommune
Antsirabe II DistrictRural District
VakinankaratraRegion
MadagascarCountry
Ilapa, Sahatany Valley, Sahatany Pegmatite Field (Mt Ibity area), Madagascar

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Latitude & Longitude (WGS84):
20° 2' 57'' South , 46° 56' 52'' East
Latitude & Longitude (decimal):
-20.04930,46.94790
GRN:
S14E32
Type:
Group of Workingses
Köppen climate type:
Cwb : Subtropical highland climate or temperate oceanic climate with dry winters
Nearest Settlements:
PlacePopulationDistance
Antsirabe186,253 (2018)22.3km
Betafo29,785 (2018)26.1km
Soanindrariny21,000 (2018)34.1km
Fandriana31,437 (2018)49.8km
Antanifotsy70,626 (2018)58.8km
Mindat Locality ID:
27796
Long-form identifier:
mindat:1:2:27796:0
GUID (UUID V4):
0
Other/historical names associated with this locality:
Sahatany pegmatite field
Other Languages:
Malagasy:
Ilapa, Lohasahan'i Sahatany, Kaominin' Alatsinainy Ibity, Distrikan' Antsirabe II, Vakinankaratra, Madagasikara


The locality designated "Ilapa" consists of several workings around Mt. Ilapa in the NE part of the Sahatany Valley, about 25 km SW of the town of Antsirabe. The pegmatites have been worked for gem polychromatic tourmalines and are hosted in a dolomitic marble.
Rakotoarison (1964) describes 3 localities along a 60m long pegmatite on the NNW flank of Mt. Ilapa, and another one about 350 m further NE.

Minerals, especially pieces of bityite found in the late 1980s originating from Antanetinilapa in the same area are sometimes wrongly labelled as coming from Ilapa.

Rakotoarison (1964) locality nr 14. (Map coordinates (for the largest): X=672,600 Y= 453,175)

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


18 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:

ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
ⓘ Beryl
Formula: Be3Al2(Si6O18)
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Cassiterite
Formula: SnO2
ⓘ Columbite-(Fe)
Formula: Fe2+Nb2O6
ⓘ Cookeite
Formula: (LiAl4◻)[AlSi3O10](OH)8
ⓘ Dravite
Formula: NaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘ Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘ Goethite
Formula: Fe3+O(OH)
ⓘ Hematite
Formula: Fe2O3
ⓘ 'Ixiolite-(Mn2+)-Ixiolite-(Fe2+) Series'
ⓘ 'Lepidolite'
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ 'Microlite Group'
Formula: A2-mTa2X6-wZ-n
ⓘ Monazite-(Ce)
Formula: Ce(PO4)
ⓘ 'Psilomelane'
ⓘ Quartz
Formula: SiO2
ⓘ Rutile
Formula: TiO2
ⓘ Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘ Spessartine
Formula: Mn2+3Al2(SiO4)3
ⓘ Spodumene
Formula: LiAlSi2O6
ⓘ Topaz
Formula: Al2(SiO4)(F,OH)2
ⓘ 'Tourmaline'
Formula: AD3G6(T6O18)(BO3)3X3Z
Colour: black
ⓘ 'Tourmaline var. Rubellite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
ⓘ Vermiculite
Formula: Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
ⓘ Zircon
Formula: Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘ'Ixiolite-(Mn2+)-Ixiolite-(Fe2+) Series'4..
ⓘGoethite4.00.Fe3+O(OH)
ⓘ'Microlite Group'4.00.A2-mTa2X6-wZ-n
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘHematite4.CB.05Fe2O3
ⓘQuartz4.DA.05SiO2
ⓘCassiterite4.DB.05SnO2
ⓘRutile4.DB.05TiO2
ⓘColumbite-(Fe)4.DB.35Fe2+Nb2O6
Group 8 - Phosphates, Arsenates and Vanadates
ⓘMonazite-(Ce)8.AD.50Ce(PO4)
Group 9 - Silicates
ⓘSpessartine9.AD.25Mn2+3Al2(SiO4)3
ⓘZircon9.AD.30Zr(SiO4)
ⓘTopaz9.AF.35Al2(SiO4)(F,OH)2
ⓘ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)
ⓘSchorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘSpodumene9.DA.30LiAlSi2O6
ⓘVermiculite9.EC.50Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
ⓘCookeite9.EC.55(LiAl4◻)[AlSi3O10](OH)8
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Lepidolite'-
ⓘ'Psilomelane'-
ⓘ'Tourmaline
var. Rubellite'		-A(D3)G6(T6O18)(BO3)3X3Z
ⓘ''-AD3G6(T6O18)(BO3)3X3Z
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)

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ⓘ Cookeite(LiAl4◻)[AlSi3O10](OH)8
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ⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Hⓘ TopazAl2(SiO4)(F,OH)2
Hⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
LiLithium
Liⓘ Cookeite(LiAl4◻)[AlSi3O10](OH)8
Liⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Liⓘ SpodumeneLiAlSi2O6
BeBeryllium
Beⓘ BerylBe3Al2(Si6O18)
BBoron
Bⓘ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Bⓘ ElbaiteNa(Li1.5Al1.5)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ⓘ BerylBe3Al2(Si6O18)
Oⓘ CassiteriteSnO2
Oⓘ Cookeite(LiAl4◻)[AlSi3O10](OH)8
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ⓘ Ixiolite-(Mn2+)-Ixiolite-(Fe2+) Series
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ Monazite-(Ce)Ce(PO4)
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ⓘ SpodumeneLiAlSi2O6
Oⓘ TopazAl2(SiO4)(F,OH)2
Oⓘ TourmalineAD3G6(T6O18)(BO3)3X3Z
Oⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Oⓘ ZirconZr(SiO4)
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ TopazAl2(SiO4)(F,OH)2
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
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ⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
AlAluminium
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ BerylBe3Al2(Si6O18)
Alⓘ Cookeite(LiAl4◻)[AlSi3O10](OH)8
Alⓘ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Alⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Alⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Alⓘ SpessartineMn32+Al2(SiO4)3
Alⓘ SpodumeneLiAlSi2O6
Alⓘ TopazAl2(SiO4)(F,OH)2
Alⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
SiSilicon
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ BerylBe3Al2(Si6O18)
Siⓘ Cookeite(LiAl4◻)[AlSi3O10](OH)8
Siⓘ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Siⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Siⓘ QuartzSiO2
Siⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Siⓘ SpessartineMn32+Al2(SiO4)3
Siⓘ SpodumeneLiAlSi2O6
Siⓘ TopazAl2(SiO4)(F,OH)2
Siⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Siⓘ ZirconZr(SiO4)
PPhosphorus
Pⓘ Monazite-(Ce)Ce(PO4)
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
ClChlorine
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
CaCalcium
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ RutileTiO2
MnManganese
Mnⓘ Ixiolite-(Mn2+)-Ixiolite-(Fe2+) Series
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ⓘ Ixiolite-(Mn2+)-Ixiolite-(Fe2+) Series
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Feⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
ZrZirconium
Zrⓘ ZirconZr(SiO4)
NbNiobium
Nbⓘ Columbite-(Fe)Fe2+Nb2O6
SnTin
Snⓘ CassiteriteSnO2
CeCerium
Ceⓘ Monazite-(Ce)Ce(PO4)
TaTantalum
Taⓘ Ixiolite-(Mn2+)-Ixiolite-(Fe2+) Series
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

Rakotoarison, W. (1964, May) Les pegmatites de la Sahatany. Archive Service Géologique de Madagascar A. 1983. Service Géologique
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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