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Ambahita graphite deposit, Bekitro, Bekily District, Androy, Madagascari
Regional Level Types
Ambahita graphite depositDeposit
BekitroCommune
Bekily DistrictDistrict
AndroyRegion
MadagascarCountry

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Latitude & Longitude (WGS84):
24° 30' 0'' South , 45° 19' 59'' East
Latitude & Longitude (decimal):
-24.50000,45.33333
GeoHash:
G#: m58hxeftp
GRN:
S17E30
Type:
Deposit
Köppen climate type:
Aw : Tropical savanna, wet
Nearest Settlements:
PlacePopulationDistance
Beteza7,000 (2018)22.6km
Mindat Locality ID:
441885
Long-form identifier:
mindat:1:2:441885:9
GUID (UUID V4):
0


The Androyen Group, which mainly consists of mafic garnet-bearing granofels, is located in the eastern part of the AMG and trends north‒south. The Graphite Group, located in the central‒western part of the AMG and widening from south to north, forms a large graphite mineralization belt trending NNE with a width of 3‒28 km and length of > 200 km. The main lithologies of this group are garnet-bearing granofels and graphite-bearing granofels, with the latter forming the principal ore-hosting strata of the graphite deposit. The
Vohibory Group, which mainly comprises granofels, amphibolite gneiss, and amphibolite, is located in the western part of the AMG.
A total of 12 orebodies have been identified in the AMG, overall occurring in a stratiform-like manner, among which orebodies No. 1 and No. 2 are the largest and most important. Orebody No. 1 is located in the central‒eastern part of the ore district, measuring 6100 m in length and 120.8‒327.4 m in thickness. The fixed carbon grade ranges from 2.66% to 9.02%, with an average of 4.25%. The southern part of orebody No. 1 extends from north to south, while the northern part is aligned in a NNE direction. Orebody No. 2 is located to the west of No. 1; it is 5880 m in length and 99.5‒198.9 m in
thickness, with a fixed carbon grade ranging from 2.83% to 8.82% (average 5.81%). Meanwhile, orebody No. 3, which is located in the western part of the ore district, has a length of 2355 m and a thickness ranging from 12.5 to 133.0 m, with a fixed carbon grade of 3.46% to 6.87% (average 4.72%). The strike and dip angles of orebodies No. 1 and No. 2 are similar at 260‒295° and 45‒50°, respectively, whereas orebody No. 3 strikes at 245‒300° and
dips at 70‒75°.

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


4 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:

ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Dravite
Formula: NaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘ 'Feldspar Group'
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
ⓘ Graphite
Formula: C
ⓘ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ Quartz
Formula: SiO2
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
ⓘ 'Tourmaline'
Formula: AD3G6 (T6O18)(BO3)3X3Z

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘGraphite1.CB.05aC
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 9 - Silicates
ⓘDravite9.CK.05NaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘPhlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Feldspar Group'-
ⓘ'Tourmaline'-AD3G6 (T6O18)(BO3)3X3Z
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'Garnet Group'-X3Z2(SiO4)3
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4

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ⓘ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Hⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
BBoron
Bⓘ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Bⓘ TourmalineAD3G6 (T6O18)(BO3)3X3Z
CCarbon
Cⓘ GraphiteC
OOxygen
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Oⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ TourmalineAD3G6 (T6O18)(BO3)3X3Z
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ Garnet GroupX3Z2(SiO4)3
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
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ⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
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ⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
AlAluminium
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Alⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Siⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siⓘ Garnet GroupX3Z2(SiO4)3
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FeIron
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2

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

[1]Yang, Ming-Jian, Di, Yong-Jun, Zhang, Da, Wu, Da-Tian, Fang, Ye, Zhang, Xin-Ming (2024) A New Insight into the Genesis of Graphite Deposits in Madagascar Using U‒Pb Zircon Dating and Electron Microprobe Analysis. Minerals, 14 (5) doi:10.3390/min14050484
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