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Anjanabonoina pegmatites, Ambohimanambola, Betafo District, Vakinankaratra, Madagascari
Regional Level Types
Anjanabonoina pegmatitesPegmatite Field
AmbohimanambolaCommune
Betafo DistrictDistrict
VakinankaratraRegion
MadagascarCountry

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Latitude & Longitude (WGS84):
19° 55' 15'' South , 46° 31' 42'' East
Latitude & Longitude (decimal):
-19.92106,46.52836
GeoHash:
G#: mh3ndv2zm
GRN:
S14E31
Type:
Pegmatite Field
Köppen climate type:
Cwb : Subtropical highland climate or temperate oceanic climate with dry winters
Mindat Locality ID:
2256
Long-form identifier:
mindat:1:2:2256:2
GUID (UUID V4):
08e90c0b-4212-4249-a653-e14d3a8efd36
Other/historical names associated with this locality:
"Anjanabonsana"
Other Languages:
Malagasy:
Anjanabonoina, Kaominin' Ambohimanambola, Distrikan'i Betafo, Vakinankaratra, Madagasikara


The Anjanabonoina pegmatites are famous for their large and multicolored tourmalines. Located 42 km WSW of the town of Betafo in the central highland of Madagascar.

These pegmatite dikes outcrop at a hill (with an elevation of about 1,400 meters) 2.5 km east of Mount Ikaka and are emplaced in a complex environment characterized by paragneiss, marble, and orthogneiss of the Neoproterozoic Itremo Group, of medium metamorphic grade. The subhorizontal bodies of pegmatite are strongly zoned. The metasedimentary rocks hosting the pegmatitic dikes locally show extensive contact-metasomatic phenomena. Abundant tourmalinization extensively affected schist and quartzite units, with schorl-dravite replacing up to 30% of the rock volume. Veins of quartz, dravite-schorl, and danburite are locally present in metasedimentary rocks close to the pegmatites, and marble is transformed into skarn (De Vito et al. 2006).

The Anjanabonoina pegmatite shows the characteristics of both lithium–cesium–tantalum (LCT) and niobium–yttrium–fluorine (NYF) pegmatite families according to pegmatite classification by Simmons; these hybrid pegmatites are very rich in rare elements which contributes to the crystals’ formation in mialoritic cavities known as pockets. Gem-bearing pockets usually represent the ultimate concentrations of exotic elements, volatiles and other fluxes present in pegmatites.

- Locality misspelled as "Anjanabonsana" in Lacroix (1909).
- A gem-quality purplish-red tourmaline sample of alleged liddicoatitic composition turned out to be Ca-rich elbaite in composition (Bosi et al.. 2021).

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Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

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

29 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:

ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ Albite var. Cleavelandite
Formula: Na(AlSi3O8)
ⓘ Annite
Formula: KFe2+3(AlSi3O10)(OH)2
Colour: Black
Description: Occurs in large plates.
ⓘ Bertrandite
Formula: Be4(Si2O7)(OH)2
ⓘ Beryl
Formula: Be3Al2(Si6O18)
Habit: crystals flattened on c, often without prism faces
Colour: colorless to pink-rose
Description: Cesium-rich
ⓘ Beryl var. Alkali-beryl
Formula: Be3Al2(Si6O18)
ⓘ Beryl var. Morganite
Formula: Be3Al2(Si6O18)
ⓘ Bismite
Formula: Bi2O3
ⓘ Bismuth
Formula: Bi
Habit: small cleavable masses
ⓘ Chrysoberyl
Formula: BeAl2O4
ⓘ 'Columbite-(Fe)-Columbite-(Mn) Series'
ⓘ Danburite
Formula: CaB2Si2O8
ⓘ Dravite
Formula: NaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘ 'Dravite-Schorl Series'
ⓘ Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘ 'Elbaite-Liddicoatite Series'
ⓘ Fersmite
Formula: (Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
ⓘ Feruvite ?
Formula: CaFe2+3(Al5Mg)(Si6O18)(BO3)3(OH)3(OH)
Description: No published analysis or other information. Samples visually identical to samples sold as feruvite in mineral shows has showed to be dravite.(K.E.Larsen commment des 2011)
ⓘ Fluor-elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
ⓘ Fluor-liddicoatite
Formula: Ca(Li2Al)Al6(Si6O18)(BO3)3(OH)3F
References:
Ertl, A., Hughes, J. M., Prowatke, S., Ludwig, T., Prasad, P. S. R., Brandstätter, F., Körner, W., Schuster, R., Pertlik, F. and Marschall, H. (2006): Tetrahedrally coordinated boron in tourmalines from the liddicoatite-elbaite series from Madagascar: Structure, chemistry, and infrared spectroscopic studies. Am. Mineral. 91, 1847-1856. [F-dominant]
Lussier, A. J., Abdu, Y., Hawthorne, F. C., Michaelis, V. K., Aguiar, P. M. and Kroeker, S. (2011): Oscillatory zoned liddicoatite from Anjanabonoina, central Madagascar. I. Crystal chemistry and structure by SREF and 11B and 27Al MAS NMR spectroscopy. Can. Mineral. 49, 63-88. [F-dominant]
Rizzo, Floriana, Bosi, Ferdinando, Tempesta, Gioacchino, Agrosì, Giovanna (2023) Compositional Variation and Crystal-Chemical Characterization of a Watermelon Variety of Tourmaline from Anjanabonoina, Central Madagascar. Crystals, 13 (8) doi:10.3390/cryst13081290
ⓘ Gibbsite
Formula: Al(OH)3
✪ Hambergite
Formula: Be2(BO3)(OH)
Habit: faces: (010), (100), prism (310)
Description: First described from Anjanabonoina by Lacroix (1909).
ⓘ 'K Feldspar'
ⓘ 'Lepidolite'
ⓘ 'Liddicoatite' ?
Formula: Ca(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Description: A gem-quality purplish-red tourmaline sample of alleged liddicoatitic composition turned out to be elbaite in composition (Bosi et al. 2021).
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Microcline
Formula: K(AlSi3O8)
ⓘ Microcline var. Amazonite
Formula: K(AlSi3O8)
ⓘ 'Microlite Group'
Formula: A2-mTa2X6-wZ-n
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Phenakite
Formula: Be2SiO4
Description: Wilson (1984) mentions a find of a pocket with danburite and phenakite. About 50 crystals of clear, colorless, prismatic phenakite from 5mm wide and, 15 cm long to 2,5 cm wide and 8 cm long were mined.
ⓘ 'Pyrochlore Group'
Formula: A2Nb2(O,OH)6Z
Description: first-generation, homogeneous = > uranoan pyrochlore
ⓘ 'Pyrochlore Supergroup'
Formula: A2-mD2X6-wZ1-n
Description: Pezzotta (1999) mentions octahedral crystals with a composition in the range pyrochlore-betafite
ⓘ 'Pyrochlore Supergroup var. Betafite (of Hogarth 1977)'
Formula: (Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
ⓘ Quartz
Formula: SiO2
ⓘ Quartz var. Rutilated Quartz
Formula: SiO2
Description: Known locally as "cheveux de Venus" (hair of Venus)
ⓘ Quartz var. Smoky Quartz
Formula: SiO2
ⓘ Rutile
Formula: TiO2
Description: Rutilated crystals as inclusions in quartz ( "cheveux de Venus" (Hair of Venus))
ⓘ Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘ Spessartine
Formula: Mn2+3Al2(SiO4)3
ⓘ Spodumene
Formula: LiAlSi2O6
ⓘ Spodumene var. Kunzite
Formula: LiAlSi2O6
ⓘ Topaz
Formula: Al2(SiO4)(F,OH)2
ⓘ 'Tourmaline'
Formula: AD3G6 (T6O18)(BO3)3X3Z
ⓘ 'Tourmaline var. Achroite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
ⓘ 'Tourmaline var. Rubellite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
ⓘ Vermiculite
Formula: Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
ⓘ Xenotime-(Y)
Formula: Y(PO4)
Habit: Blocky
Colour: colorless
Description: Found as inclusions in elbaite-liddicoatite
ⓘ 'Zinnwaldite'
ⓘ Zircon
Formula: Zr(SiO4)

Gallery:

Be3Al2(Si6O18)ⓘ Beryl var. Alkali-beryl
Be3Al2(Si6O18)ⓘ Beryl var. Morganite
CaB2Si2O8ⓘ Danburite
Ca(Li2Al)Al6(Si6O18)(BO3)3(OH)3Fⓘ Fluor-liddicoatite
Be2(BO3)(OH)ⓘ Hambergite
Be2SiO4ⓘ Phenakite
(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)ⓘ 'Pyrochlore Supergroup var. Betafite (of Hogarth 1977)'
AD3G6 (T6O18)(BO3)3X3Zⓘ 'Tourmaline'
A(D3)G6(T6O18)(BO3)3X3Zⓘ 'Tourmaline var. Achroite'
A(D3)G6(T6O18)(BO3)3X3Zⓘ 'Tourmaline var. Rubellite'

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘBismuth1.CA.05Bi
Group 4 - Oxides and Hydroxides
ⓘ'Pyrochlore Group'4.00.A2Nb2(O,OH)6Z
ⓘ'Microlite Group'4.00.A2-mTa2X6-wZ-n
ⓘChrysoberyl4.BA.05BeAl2O4
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘBismite4.CB.60Bi2O3
ⓘQuartz
var. Rutilated Quartz		4.DA.05SiO2
ⓘ4.DA.05SiO2
ⓘvar. Smoky Quartz4.DA.05SiO2
ⓘRutile4.DB.05TiO2
ⓘFersmite4.DG.05(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
ⓘGibbsite4.FE.10Al(OH)3
Group 6 - Borates
ⓘHambergite6.AB.05Be2(BO3)(OH)
Group 8 - Phosphates, Arsenates and Vanadates
ⓘXenotime-(Y)8.AD.35Y(PO4)
Group 9 - Silicates
ⓘPhenakite9.AA.05Be2SiO4
ⓘSpessartine9.AD.25Mn2+3Al2(SiO4)3
ⓘZircon9.AD.30Zr(SiO4)
ⓘTopaz9.AF.35Al2(SiO4)(F,OH)2
ⓘBertrandite9.BD.05Be4(Si2O7)(OH)2
ⓘBeryl9.CJ.05Be3Al2(Si6O18)
ⓘvar. Alkali-beryl9.CJ.05Be3Al2(Si6O18)
ⓘvar. Morganite9.CJ.05Be3Al2(Si6O18)
ⓘSchorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘFluor-liddicoatite9.CK.05Ca(Li2Al)Al6(Si6O18)(BO3)3(OH)3F
ⓘ'Liddicoatite' ?9.CK.05Ca(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘElbaite9.CK.05Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘDravite9.CK.05NaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘFluor-elbaite9.CK.05Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
ⓘFeruvite ?9.CK.05CaFe2+3(Al5Mg)(Si6O18)(BO3)3(OH)3(OH)
ⓘSpodumene
var. Kunzite		9.DA.30LiAlSi2O6
ⓘ9.DA.30LiAlSi2O6
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘAnnite9.EC.20KFe2+3(AlSi3O10)(OH)2
ⓘVermiculite9.EC.50Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
ⓘMicrocline
var. Amazonite		9.FA.30K(AlSi3O8)
ⓘ9.FA.30K(AlSi3O8)
ⓘAlbite
var. Cleavelandite		9.FA.35Na(AlSi3O8)
ⓘ9.FA.35Na(AlSi3O8)
ⓘDanburite9.FA.65CaB2Si2O8
Unclassified
ⓘ'Tourmaline'-AD3G6 (T6O18)(BO3)3X3Z
ⓘ'var. Achroite'-A(D3)G6(T6O18)(BO3)3X3Z
ⓘ'Zinnwaldite'-
ⓘ'Pyrochlore Supergroup
var. Betafite (of Hogarth 1977)'		-(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
ⓘ'Columbite-(Fe)-Columbite-(Mn) Series'-
ⓘ'Dravite-Schorl Series'-
ⓘ'K Feldspar'-
ⓘ'Pyrochlore Supergroup'-A2-mD2X6-wZ1-n
ⓘ'Elbaite-Liddicoatite Series'-
ⓘ'Lepidolite'-
ⓘ'Tourmaline
var. Rubellite'		-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
Hⓘ AnniteKFe32+(AlSi3O10)(OH)2
Hⓘ BertranditeBe4(Si2O7)(OH)2
Hⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Hⓘ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Hⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Hⓘ Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
Hⓘ FeruviteCaFe32+(Al5Mg)(Si6O18)(BO3)3(OH)3(OH)
Hⓘ GibbsiteAl(OH)3
Hⓘ HambergiteBe2(BO3)(OH)
Hⓘ LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ Pyrochlore GroupA2Nb2(O,OH)6Z
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ⓘ Fluor-elbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
Hⓘ Fluor-liddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3F
LiLithium
Liⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Liⓘ Spodumene var. KunziteLiAlSi2O6
Liⓘ LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Liⓘ SpodumeneLiAlSi2O6
Liⓘ Fluor-elbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
Liⓘ Fluor-liddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3F
BeBeryllium
Beⓘ Beryl var. Alkali-berylBe3Al2(Si6O18)
Beⓘ BertranditeBe4(Si2O7)(OH)2
Beⓘ BerylBe3Al2(Si6O18)
Beⓘ ChrysoberylBeAl2O4
Beⓘ HambergiteBe2(BO3)(OH)
Beⓘ Beryl var. MorganiteBe3Al2(Si6O18)
Beⓘ PhenakiteBe2SiO4
BBoron
Bⓘ Tourmaline var. AchroiteA(D3)G6(T6O18)(BO3)3X3Z
Bⓘ DanburiteCaB2Si2O8
Bⓘ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Bⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Bⓘ FeruviteCaFe32+(Al5Mg)(Si6O18)(BO3)3(OH)3(OH)
Bⓘ HambergiteBe2(BO3)(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
Bⓘ Fluor-elbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
Bⓘ Fluor-liddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3F
OOxygen
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ Beryl var. Alkali-berylBe3Al2(Si6O18)
Oⓘ Microcline var. AmazoniteK(AlSi3O8)
Oⓘ AnniteKFe32+(AlSi3O10)(OH)2
Oⓘ Tourmaline var. AchroiteA(D3)G6(T6O18)(BO3)3X3Z
Oⓘ BertranditeBe4(Si2O7)(OH)2
Oⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Oⓘ BismiteBi2O3
Oⓘ BerylBe3Al2(Si6O18)
Oⓘ ChrysoberylBeAl2O4
Oⓘ DanburiteCaB2Si2O8
Oⓘ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Oⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Oⓘ Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
Oⓘ FeruviteCaFe32+(Al5Mg)(Si6O18)(BO3)3(OH)3(OH)
Oⓘ GibbsiteAl(OH)3
Oⓘ HambergiteBe2(BO3)(OH)
Oⓘ Spodumene var. KunziteLiAlSi2O6
Oⓘ LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ MicroclineK(AlSi3O8)
Oⓘ Beryl var. MorganiteBe3Al2(Si6O18)
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ PhenakiteBe2SiO4
Oⓘ Pyrochlore GroupA2Nb2(O,OH)6Z
Oⓘ QuartzSiO2
Oⓘ Tourmaline var. RubelliteA(D3)G6(T6O18)(BO3)3X3Z
Oⓘ Quartz var. Rutilated QuartzSiO2
Oⓘ RutileTiO2
Oⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Oⓘ Quartz var. Smoky QuartzSiO2
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ⓘ Xenotime-(Y)Y(PO4)
Oⓘ ZirconZr(SiO4)
Oⓘ Albite var. CleavelanditeNa(AlSi3O8)
Oⓘ Fluor-elbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
Oⓘ Fluor-liddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3F
FFluorine
Fⓘ Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
Fⓘ TopazAl2(SiO4)(F,OH)2
Fⓘ Fluor-elbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
Fⓘ Fluor-liddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3F
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Naⓘ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Naⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Naⓘ Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
Naⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Naⓘ Albite var. CleavelanditeNa(AlSi3O8)
Naⓘ Fluor-elbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
MgMagnesium
Mgⓘ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Mgⓘ FeruviteCaFe32+(Al5Mg)(Si6O18)(BO3)3(OH)3(OH)
Mgⓘ VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ Beryl var. Alkali-berylBe3Al2(Si6O18)
Alⓘ Microcline var. AmazoniteK(AlSi3O8)
Alⓘ AnniteKFe32+(AlSi3O10)(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ⓘ FeruviteCaFe32+(Al5Mg)(Si6O18)(BO3)3(OH)3(OH)
Alⓘ GibbsiteAl(OH)3
Alⓘ Spodumene var. KunziteLiAlSi2O6
Alⓘ LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Alⓘ MicroclineK(AlSi3O8)
Alⓘ Beryl var. MorganiteBe3Al2(Si6O18)
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
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
Alⓘ Albite var. CleavelanditeNa(AlSi3O8)
Alⓘ Fluor-elbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
Alⓘ Fluor-liddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3F
SiSilicon
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ Beryl var. Alkali-berylBe3Al2(Si6O18)
Siⓘ Microcline var. AmazoniteK(AlSi3O8)
Siⓘ AnniteKFe32+(AlSi3O10)(OH)2
Siⓘ BertranditeBe4(Si2O7)(OH)2
Siⓘ BerylBe3Al2(Si6O18)
Siⓘ DanburiteCaB2Si2O8
Siⓘ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Siⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Siⓘ FeruviteCaFe32+(Al5Mg)(Si6O18)(BO3)3(OH)3(OH)
Siⓘ Spodumene var. KunziteLiAlSi2O6
Siⓘ LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Siⓘ MicroclineK(AlSi3O8)
Siⓘ Beryl var. MorganiteBe3Al2(Si6O18)
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ PhenakiteBe2SiO4
Siⓘ QuartzSiO2
Siⓘ Quartz var. Rutilated QuartzSiO2
Siⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Siⓘ Quartz var. Smoky QuartzSiO2
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)
Siⓘ Albite var. CleavelanditeNa(AlSi3O8)
Siⓘ Fluor-elbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
Siⓘ Fluor-liddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3F
PPhosphorus
Pⓘ Xenotime-(Y)Y(PO4)
KPotassium
Kⓘ Microcline var. AmazoniteK(AlSi3O8)
Kⓘ AnniteKFe32+(AlSi3O10)(OH)2
Kⓘ MicroclineK(AlSi3O8)
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Caⓘ DanburiteCaB2Si2O8
Caⓘ Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
Caⓘ FeruviteCaFe32+(Al5Mg)(Si6O18)(BO3)3(OH)3(OH)
Caⓘ LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Caⓘ Fluor-liddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3F
TiTitanium
Tiⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Tiⓘ Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
Tiⓘ RutileTiO2
MnManganese
Mnⓘ SpessartineMn32+Al2(SiO4)3
FeIron
Feⓘ AnniteKFe32+(AlSi3O10)(OH)2
Feⓘ FeruviteCaFe32+(Al5Mg)(Si6O18)(BO3)3(OH)3(OH)
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
YYttrium
Yⓘ Xenotime-(Y)Y(PO4)
ZrZirconium
Zrⓘ ZirconZr(SiO4)
NbNiobium
Nbⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Nbⓘ Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
Nbⓘ Pyrochlore GroupA2Nb2(O,OH)6Z
CeCerium
Ceⓘ Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
TaTantalum
Taⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Taⓘ Fersmite(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
Taⓘ Microlite GroupA2-mTa2X6-wZ-n
BiBismuth
Biⓘ BismiteBi2O3
Biⓘ BismuthBi
UUranium
Uⓘ Pyrochlore Supergroup var. Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)

Localities in this Region

Madagascar
  • Vakinankaratra
    • Betafo District

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

Lacroix, A. (1908) Les minéraux des filons de pegmatite à tourmaline lithique de Madagascar. Bulletin de la Société Francaise de Minéralogie 31: 218- 247. [with notes on tourmaline from Anjanabonoina].
Lacroix, Alfred (1909) Sur la hambergite de Madagascar. Bulletin de Minéralogie, 32 (7) 320-324 doi:10.3406/bulmi.1909.3373
Lacroix, Alfred (1922) Minéralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. Augustin Challamel, Paris. p.1-624.
Behier, Jean (1963) Carte minéralogique de Madagascar. Archive Service Géologique de Madagascar A.1871
Switzer, G., Clarke Jr, R.S, Sinkankas, J., and Worthing, H.W. (1965) Fluorine in hambergite. American Mineralogist 50: 85-95 [with analysis on hambergite from Anjanabonoina].
Strunz, H. (1979) Anjanabonoina, Fundort schönster Tourmaline. Lapis 4: 24-27, 47-48.
Bancroft, Peter (1984) Gem & Crystal Treasures. Western Enterprises, Fallbrook CA, with the Mineralogical Record Inc, Tucson, Arizona. p.1-488.pp.322-325
Wilson, W.E. (1984) What's new in Minerals? Munich show 1983. Mineralogical Record 15: 118. [on a find of phenakite].
Wilson, W.E. (1989) The Anjanabonoina pegmatite, Madagascar. Mineralogical Record 20: 191-200.
Pezzotta, Federico (1999) Madagaskar. Das Paradies der Mineralien und Edelsteine. extraLapis 17. Christian Weise Verlagpp.56-59
De Vito, C., Aurisicchio, C., Ferrini, V., Pezzotta, F. (2002) Nb-Ta oxides from Anjanabonoina pegmatite. 18th General Meeting of the International Mineralogical Association (IMA), Edinburgh 2002. Program and Abstracts 275.
De Vito, C., Aurisicchio, C., Ferrini, V., Pezzotta, F. (2002) Chemical composition and B, O and H isotopes of tourmaline from Anjanabonoina pegmatite. 18th General Meeting of the International Mineralogical Association (IMA), Edinburgh 2002. Program amd Abstracts 208.
Dini, A., Tonarini, S., Pezzotta, F., De Vito, C. (2002) Boron isotopes study of borates and boro-silicates from Anjanabonoina and Tetezantsio pegmatites (central Madagascar) 18th General Meeting of the International Mineralogical Association (IMA), Edinburgh 2002. Program amd Abstracts 210.
Dirlam, D.M., Laurs, B.M., Pezzotta, F., and Simmons, W.B. (2002) Liddicoatite tourmaline from Anjanabonoina, Madagascar. Gems and Gemology 38: 28-52.
De Vito, C., Pezzotta, F., Ferrini, V., Aurisicchio, C. (2006) Nb-Ti-Ta oxides in the gem-mineralized and "hybrid" Anjanabonoina granitic pegmatite, central Madagascar: A record of magmatic and postmagmatic events. The Canadian Mineralogist, 44 (1) 87-103 doi:10.2113/gscanmin.44.1.87
Ertl, A., Hughes, J.M., Prowatke, S., Ludwig, T., Prasad, P.S.R., Brandstätter, F., Körner, W., Schuster, R., Pertlik, F. and Marschall, H. (2006) Tetrahedrally coordinated boron in tourmalines from the liddicoatite-elbaite series from Madagascar: Structure, chemistry, and infrared spectroscopic studies. American Mineralogist 91: 1847-1856. [both F-dominant]
Lussier, A.J., Abdu, Y., Hawthorne, F.C., Michaelis, V.K., Aguiar, P.M., and Kroeker, S. (2011) Oscillatory zoned liddicoatite from Anjanabonoina, central Madagascar. I. Crystal chemistry and structure by SREF and 11B and 27Al MAS NMR spectroscopy. Canadian Mineralogist 49: 63-88. [F-dominant]
Lussier, A.J. and Hawthorne, F. (2011) Oscillatory zoned liddicoatite from Anjanabonoina, central Madagascar. II. Compositional variation and mecanisms of substitution. Canadian Mineralogist 49: 89-103.
Petsch, Julius (2011) Madagaskar: Die Wiederentdeckung einer Turmalinmine [Madagascar: The Rediscovery of a Tourmaline Mine], in Turmalin II. extraLapis 41, 62-65
Bosi, Ferdinando, Celata, Beatrice, Skogby, Henrik, Hålenius, Ulf, Tempesta, Gioacchino, Ciriotti, Marco E., Bittarello, Erica, Marengo, Alessandra (2021) Mn-bearing purplish-red tourmaline from the Anjanabonoina pegmatite, Madagascar. Mineralogical Magazine, 85 (2) 242-253 doi:10.1180/mgm.2021.20
[1]Rizzo, Floriana, Bosi, Ferdinando, Tempesta, Gioacchino, Agrosì, Giovanna (2023) Compositional Variation and Crystal-Chemical Characterization of a Watermelon Variety of Tourmaline from Anjanabonoina, Central Madagascar. Crystals, 13 (8) doi:10.3390/cryst13081290
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