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Antsakoanimanta (Mangatobangy), Mangataboahangy, Ambatofinandrahana, Amoron'i Mania, Madagascari
Regional Level Types
Antsakoanimanta (Mangatobangy)Deposit
MangataboahangyCommune
AmbatofinandrahanaDistrict
Amoron'i ManiaRegion
MadagascarCountry

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Key
Latitude & Longitude (WGS84):
20° South , 46° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~55km
Locality type:
Other Languages:
Malagasy:
Karieran' Antsakoanimanta, Kaominin'i Mangataboahangy, Distrikan' Ambatofinandrahana, Faritra Amoron'i Mania, Madagasikara


Quartz veins in quartzites worked for quartz. Some remarkable amethyst scepters has been found here.
The mine is situated in the commune of Mangatabohangy about 50 km NNW of the village Amborompotsy (on the mainroad going from Malaimbandy to Ambatofinandrahana) in the central highland of Madagascar.

The locality has been refered to as "Mangatobangy", probably a mispelling of the name of the commune which the locality is situated in , eg. Mangatabohangy.

Regions containing this locality

Somali Plate (Somalia Plate)Tectonic Plate
Fianarantsoa Province, MadagascarProvince

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

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


Mineral List


4 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and 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:

Lepidocrocite ?
Formula: γ-Fe3+O(OH)
Description: Probably hematite; Lepidocrocite has never been positively identified as an inclusion in quartz (Pers.com John S. White)
Reference: Pezzotta, F. (1996): Mangatobangy. Amethyst-Zepter aus Madagascar. Lapis 21 (9), pp 32-35
Opal
Formula: SiO2 · nH2O
Reference: Pezzotta, F. (1996): Mangatobangy. Amethyst-Zepter aus Madagascar. Lapis 21 (9), pp 32-35
Pyrite
Formula: FeS2
Reference: Pezzotta, F. (1996): Mangatobangy. Amethyst-Zepter aus Madagascar. Lapis 21 (9), pp 32-35
Quartz
Formula: SiO2
Reference: Thomas, L. & Lefevre, M. (1996): Les Sceptres Améthystes d`Antsakoanimanta Madagascar. Le Régne Minéral no 11, pp 5-8
Quartz var: Amethyst
Formula: SiO2
Reference: Thomas, L. & Lefevre, M. (1996): Les Sceptres Améthystes d`Antsakoanimanta Madagascar. Le Régne Minéral no 11, pp 5-8

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Lepidocrocite ?4.FE.15γ-Fe3+O(OH)
Opal4.DA.10SiO2 · nH2O
Quartz4.DA.05SiO2
var: Amethyst4.DA.05SiO2

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Lepidocrocite ?6.1.2.2γ-Fe3+O(OH)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Unclassified Minerals, Mixtures, etc.
Quartz
var: Amethyst
-SiO2

List of minerals for each chemical element

HHydrogen
H OpalSiO2 · nH2O
H Lepidocrociteγ-Fe3+O(OH)
OOxygen
O QuartzSiO2
O Quartz (var: Amethyst)SiO2
O OpalSiO2 · nH2O
O Lepidocrociteγ-Fe3+O(OH)
SiSilicon
Si QuartzSiO2
Si Quartz (var: Amethyst)SiO2
Si OpalSiO2 · nH2O
SSulfur
S PyriteFeS2
FeIron
Fe PyriteFeS2
Fe Lepidocrociteγ-Fe3+O(OH)

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Thomas, L. & Lefevre, M. (1996): Les Sceptres Améthystes d`Antsakoanimanta Madagascar. Le Régne Minéral no 11, pp 5-8
Pezzotta, F. (1996): Mangatobangy. Amethyst-Zepter aus Madagascar. Lapis 21 (9), pp 32-35


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