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Vohitrakanga pegmatite, Andrembesoa, Betafo, Vakinankaratra, Madagascari
Regional Level Types
Vohitrakanga pegmatitePegmatite

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Latitude & Longitude (WGS84):
20° 16' 0'' South , 46° 34' 59'' East
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
Ambatofinandrahana25,997 (2018)39.2km
Other Languages:
Vohitrakanga, Kaominin' Andrembesoa, Distrikan'i Betafo, Vakinankaratra, Madagasikara

A pegmatite worked for gems located ca 20 km south of the famous Anjanabonoina pegmatite in the central highland of Madagascar, near the Ankonohono village in the fokotany of Lazarivo in the Andrembesoa Commune.
X = 411,25
Y = 686,25
According to Ungemach (1916), the locality was exploited for tourmaline by Mr. Passot around 1914, and it is located near Ankonohono, and a day's march south of Fefena pegmatite.

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Standard Detailed Strunz Dana Chemical Elements

Commodity List

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

Mineral List

2 valid minerals.

Rock Types Recorded

Note: this is a very new system on and 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:

Formula: Be3Al2(Si6O18)
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
'Liddicoatite' ?
Formula: Ca(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Dirlam, D.M., Laurs, B.M., Pezzotta, F., and Simmons, W.B. (2002): Liddicoatite tourmaline from Anjanabonoina, Madagascar. Gems and Gemology: 38: 28-52
Formula: SiO2
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Quartz var: Citrine
Formula: SiO2
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Quartz var: Rose Quartz
Formula: SiO2
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Formula: A(D3)G6(Si6O18)(BO3)3X3Z
Reference: Knut Edvard Larsen collection

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
var: Citrine4.DA.05SiO2
var: Rose Quartz4.DA.05SiO2
Group 9 - Silicates
'Liddicoatite' ?9.CK.05Ca(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Unclassified Minerals, Rocks, etc.

List of minerals arranged by Dana 8th Edition classification

Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
Six-Membered Rings with borate groups
'Liddicoatite' ?
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Unclassified Minerals, Mixtures, etc.
var: Citrine-SiO2
var: Rose Quartz-SiO2

List of minerals for each chemical element

H LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Li LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Be BerylBe3Al2(Si6O18)
B TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
B LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
O QuartzSiO2
O BerylBe3Al2(Si6O18)
O Quartz (var: Rose Quartz)SiO2
O Quartz (var: Citrine)SiO2
O TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
O LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Al BerylBe3Al2(Si6O18)
Al LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Si QuartzSiO2
Si BerylBe3Al2(Si6O18)
Si Quartz (var: Rose Quartz)SiO2
Si Quartz (var: Citrine)SiO2
Si TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
Si LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Ca LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)


Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Ungemach, M.H. (1916) Contribution à la Minéralogie de Madagascar. Bulletin de la Société française de minéralogie 39: 5-38 (on tourmaline from Vohitrakanga).
Behier, J. (1963) Carte minéralogique de Madagascar. Archive Service Géologique Madagascar. A 1871.
Rakotoarisoa Nivomalala (2003) Contribution à l'étude monographique des gîtes pegmatitiques de la région de Betafo-Antsirabe. Interprétation structurale d'images Landsat. École Supérieure Polytechnique d'Antananarivo 2003.

Other Regions, Features and Areas containg this locality

Somali PlateTectonic Plate

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